Nitrogen Tire Inflation Systems
Nitrogen in Tires... it's All the Rage!


Premier Nitrogen tm
   Featuring... the Filling Station tm

Top of the line... N2 Purge and Fill Inflation Systems

With several configurations available, we have a perfect size fit for your service operation!  Our top of the line Premier Nitrogen Filling Station has a full color touch screen and can even be used to feed an EVAP Smoke Generator or attach to an empty A/C system for flushing and leak detection.


BIG NEWS FOR 2013!               BIG NEWS FOR 2013!              BIG NEWS FOR 2013!             BIG NEWS FOR 2013!


Thanks to incredible sales growth and the continued loyal support
of our customers, we've been able to expand our N2 line of products.
Get ready for....
New "Lower Priced" Nitrogen Filling Systems
(To complement our Premier Filling Stations, some new base systems are under $500)
New Premier Nitrogen Service Tools
(Digital and Hand Tools that speed and ease service)
New Support Products and Programs
(Add additional services to an N2 fill and increase your margins and net profit)
Newly Designed / Technically Advanced
"Premier N2 Generators"

(All new, high purity, Non-Membrane machines... at half the price of other systems)

It is unfortunate be we can not share, via the net, all the technology we have available for you.  There are some companies that deliberately copy ideas, trade secrets and TM's that they aren't able to develop themselves.

Please dial 1(800) 266-4497 right now and we'll share details on N2 systems, plus offer you a special pricing discount for taking the time.
(Note: Best time to reach the tech department is 2pm to 8pm EST)

New Features in 2013...
Our Incredible Emergency Roadside Assistance Program


Premier Nitrogen Auto Club
ERA Registration Page

If you want to review or have already purchased a Premier Nitrogen Tire Service, please click this link.  You can take a peak or register your purchase and activate one year of Tire Protection and Emergency Road-Hazard Assistance. 



The Cadillac of the Nitrogen world, no one even comes close! sm

Premier Nitrogen tm
Filling Station tm

utomatically "Purge and Inflate" up to 4, 5 or 6 tires, including the spare*
with up to 99% pure Nitrogen in just 5 to 10 minutes

(*Please note that configurations are available for 6, 8 and 10 hoses, for dualies and larger trucks)

Put "Nitrogen in Tires" with the simple touch of your finger and
generate an "Average Profit Margin" of 1000% to 3000% on each service!


A past TIRE BUSINESS survey determined nearly 50% of all U.S. service centers would have Nitrogen Service by the end of 2012!  It's nearly a certified fact!  The question remaining... will you be caught without a system?  Do you want to add $25,000, $50,000, $75,000 or more to your yearly "NET" profit?  Remember, if you don't fill tires with Nitrogen, the competition down the street will be the one selling it to your customer... plus maybe more.  It's only a matter of time, everyone will need Nitrogen to be able to service tires and perform traditional Undercar Services like balancing, alignments and rotations.



Are you prepared for the N2 service explosion?

Not just any nitrogen but Premier Nitrogen, it's better!  We're dedicated to helping you find the perfect solution for your operation.  Call one of our knowledgeable technical people today!  You will see we have the expertise to design and implement the right equipment, so you can share in the profitable Nitrogen Tire Inflation business.    Dial us right now...  1(800) 266-4497


Close up view of optional 8" Touch Screen, aircraft quality gauges and safety lock out on/off switch  (GWR Deluxe Premier Nitrogen Machine). Extreme Duty cart with Premier Filling Station Control Panel, Ultra Duty Reinforce Ployurathane hoses and Touch Screen PLC. Close up view of our newly upgraded Extreme-Duty Reinforced Polyurethane hones with Strain Relief. High quality caps, parts and tools for Nitrogen and TPMS service, we guarantee savings!


When we say Automatic, we really mean Automatic...

The Premier Nitrogen "Filling Station" is the only machine on the market with individual tire pressure monitoring.  Why is this important?  What if you want to service a vehicle with different front and rear tire pressures?  With other systems* you will have to go through two service cycles, one to fill the front tries and then another to fill the rear tires. Since the laws of physics dictates the time to purge and fill and then purge and fill again (normal procedure for 97% N2 concentrations) would be approximately 10 minutes, servicing the above dual pressure vehicle could take 20 minutes minimum.  Now add the spare tire to the equation (the most important tire on the vehicle for conversion) and it might take up to 30 minutes for a full size service.   On the other hand, the Premier N2 Filling Station, requires a total time of only 10 minutes for this vehicle.  And that's for up to 5 or 6 tires, with varying pressures!  You don't add on full service cycles, since all tires are converted at the same time and at the correct pressure setting according to the O.E.M. specs.

* Parker, Branick, Ingersoll-Rand, PurigeN98, Ultrafill99, RTI, Tire Last, etc. 

You might wonder why we list our competitors on our web site, some you may not even know.  You might ask, aren't we afraid you'll call them and compare?  Well actually we are hoping you will.  Please call any one of the above companies and ask if their system can fill all five to six tires (or more) while individually monitoring the pressure in each tire during the purge and fill cycles. 

They may try to explain they have 4 to 6 hoses like the Premier System, but they'll conveniently forget to mention all those hoses are attached to a single manifold log with one single pressure.  If you want to fill different pressures on the same car, at the same time... you are out of luck.  If they are willing to admit they use a manifold, ask them how they compensate for the uneven final purge pressure and gas volumes, when their system shuts down based on "average" pressure as defined by the log sensor.  If this sounds a little complicated don't worry too much, they probably don't know what it means either or that it is technically important.


By now you're probably thinking you can't afford a Premier Nitrogen Filling Station.  Be prepared for a pleasant surprise because you won't spend $6,000, $7,000, $8,000 or more, as is the case with the less sophisticated machines from our competitors. 


Newly Designed, Technically Advanced "Premier N2 Systems" now available!
Note:  Several units are priced under $2000.

No one can sell you a top quality, digitally controlled,
fully automatic Premier Nitrogen tire filling system for less!

We unconditionally guarantee it!

Plus we have available the "only" fully digitally controlled touch screen system on the market, it light years ahead in technology.

Why buy a GWR Premier Nitrogen Tank Filling Stationtm

GWR's revolutionary tank systems can automatically delivers a consistent 99.99% concentration of Nitrogen to the tire, something no generator system can do.  Interestingly though, some manufacturers do claim they can... on their web site.  (IE: " Our generators can produce nitrogen in excess of 99.9% purity and provide the procedures to guarantee a minimum of 95% purity in the serviced tire, which is the minimum allowable purity that must be maintained in the tire to enjoy the benefits that nitrogen provides.")  Well they are almost right with the 95% (it's 97%), although it is impossible to consistently get 99.9% with a generator due to inherent problems with membranes, filters and run time.

In comparison to our tank system, some Nitrogen "Generating" machines fluctuate gas concentration by as much as 10% as their membrane filters become clogged with contaminants and oils from the shop's air supply. Worse, the net cost per tire runs from an absolute minimum of $1 to as much as $4.  That's based on fixed yearly maintenance costs, the condition of the Generator's filtration and membrane system itself and the quality of the supporting air compressor.  Remember that the longer their system runs, the longer it takes to regenerate N2 because filter contamination grows and flow rates decrease with every hour or usage.

We thought you might be interested in reading an excerpt
from a manufacture of generator systems.
This one is actually honest about the limitation of membranes.

"Since membranes start degrading immediately, a customer's unit will over-perform at first. If, however, we put high-pressure air through the membrane and/or pushing high volumes of air through the unit to increase flow, the unit will degrade much faster.

If you think of the logic, it’s obvious: Membranes degrade because molecular particles which get past filtration plug the holes through which the O2, CO4, CO2 molecules ferment. The more air and the higher the pressure (more excited molecules bouncing around, moving, giving a better chance for impurities to plug holes) the more quickly the membrane deteriorates.  Since the membrane is 85% of the cost of a membrane system (I.E. $3,000 to $5,000), things go downhill pretty fast.

In general... as membrane purity goes down, customers must increase flow of input air to ensure volume and purity. Each time more air is added though, degradation of the membrane becomes faster and faster."

If this scares you and it should if you have a limited budget, you are a candidate for the Premier Nitrogen Filling Station!  Because there is no expensive membrane to replace down the road, the consistent final cost per tire with a Premier Filling Station is only .25¢ to .50¢, that's less than $2 per vehicle!  Not bad when you consider the average retail ticket for four tires is $30 to $40.  Yes, a 1000% to 2000% mark-up with virtually no labor or parts... plus our exclusive touch screen allows anyone on your staff to perform the simple service with only 5 minutes of initial instruction.

Do the math and you will see how the GWR Nitrogen Filling Station (tm) creates a 400% greater profit margin with 1/4 the labor time.  Our machines don't just put "nitrogen in tires", they do all four (or 4 plus spare) at one time, automatically! Generators, on the other hand have one hose and take 30 to 45 minutes to do the same service.  If they happen to have added more hoses now to keep up with the Premier System (so called "new and improved" models), they still take 30 minutes or more on a multi pressure vehicle.  In contrast, simply set the various tire pressures on the Premier Nitrogen's Color Touch Screen, push the start button and walk away.  In about 10 to 12 minutes all four or five tires, will have been purged and filled twice with virtually no labor on the technicians part.  Most important, there is no waiting time to "make more nitrogen" after two or three are filled, like some generators systems.  Can you or your customer wait an additional 10 minutes to an hour, for the generation and storage of more Nitrogen if a machine ran out during a service?  That's asking a lot!

Note:  Our systems can be configured to fill more than one vehicle at a time, with no waiting.  If you are a busy multi-bay shop this may be a money making option for you!  Remember, with our tank distribution system, there is never a wait to "generate" more Nitrogen before the next fill job.  You can even add multiple tanks with our exclusive automatic tank pressure monitoring system... it allows you to fill vehicles for weeks or even months without touching a tank.  Additionally there are new features now available that we decided not to discuss here, to keep from competitors eyes.  It's only fair they should have to research and develop new innovations like we do, not just take them from more progressive companies like Premier.

After all this, we still offer more...

 GWR's exclusive design reduces your initial cost when compared to big name generator filling systems.  They may have the name but they do not have the best system, that's a guaranteed fact!  For example, what if there is a break-down of your generator machine?  Can you afford to wait days of weeks for a service technician to come to your location?  Worse, do you want to crate the monster machine at your expense, to send it back for repairs that may take weeks or months.  If you purchase GWR's Premier Nitrogen Filling Station(tm) you won't need to, ever! On the slight chance you ever encounter a problem with our state of the art technology, you simply disconnect the hoses, unplug the power cord and then remove the entire top panel from the main metal housing/cart.  The 20 lb "brain" can then be sent via the US Postal Service, FedEx or UPS, for a quick repair at our factory.  Again, with our exclusive design, the whole repair process requires only one day in-house, before we turn it around.  Check out the warrantee of the big names and be sure to read the fine print... most are fully warranted for only 1 year, not the 5 years they claim.  Additionally, you must buy expensive multiple filters exclusively from them and follow a rigorous extensive maintenance schedule, otherwise you void the entire warrantee.  Finally, they make sure they are fully protected by stating your warrantee is void if they find one speck of oil in the membrane.... something virtually impossible in a shop environment.

A final though about "generators"

You may be unaware of this fact, "generators" require the continual replacement of their expensive membranes ($3000-$5000) and multiple inline filters. Their salespeople will tell you a membrane last for 5 to 10 years, but they are talking absolute perfect conditions with an air compressor/filtration system that would cost you $10,000 minimum.  Reality is, there's no way to change this "built-in" design problem, so actual "real cost" of a generator's maintenance will probably be $1000 to $2000 per year. We regularly get calls from shops telling us they have replaced membranes within a year of the new purchase... at a cost in excess of $3000.   Worse, that amount does not include the enormous cost of electricity required to run a 12CFM or higher, 2 Stage, 175PSI air compressor, or the ware and tear on it.  (Note:  Standard shop compressors can run 3, to 4, to up to 8 hours per day since their volume and or pressure is generally not sufficient to push a high volume of air through the O2/N2 separating membrane, plus the production ratio of O2 to Nitrogen is about 3 to 1.  Additionally, shops may have to wait for extended periods of time for a generator system to manufacturer more nitrogen, possibly on a single vehicle.)

Amazing facts "they" don't want you to know:

A membrane's capacity to produce nitrogen will drop 61% when you try to increase nitrogen purity from 95% to 99% (example 8 scfm will drop to 3.1 scfm).  Additionally, membranes will lose the capacity to produce nitrogen when the temperature drops in the shop below membrane ambient operating temperatures, normally quoted at 68 degrees to 75 degrees.  On the average, for every one degree of temperature drop below these operating ambient temperatures, a membrane will lose .9% cubic feet of gas production.  This condition could be overcome by heating the air feed, however this adds additional operating expenses, plus the initial cost of new equipment.  Any way you look at it... membranes are expensive initially and for the long run!

Something new "they" came up with!

We found out something interesting while displaying our Premier Nitrogen Filling Station at the 2006 SEMA show in Las Vegas, a few years ago.  Several of the most powerful companies selling nitrogen generators have gotten together and formed a so call "information organization" to tout the benefits of nitrogen to the general public. Interestingly they have limited their founding and controlling members to four companies, the "big" generator manufactures (surprise, surprise).  Additionally, they are directing the information coming out to the public so that it seemingly supports a new opinion that you only need a 93% final concentration of nitrogen in tires.  We find this disturbing yet expected, since most generators can't fill tires with a greater than 93% concentration.  From the beginning of tire testing and discussions on nitrogen, all scientific testing and engineers in the rubber and tire manufacturing field have supported the 96% number as the absolute minimum.  Now, all of a sudden, non scientific based companies who only "assemble or re-label equipment" come up with a "new" theory. One that supports their limitations!  Who are we to believe?   Does it sound logical that replacing air with nitrogen in a tire is beneficial, yet you don't need to change as much as is physically possible?  They state that at 93% N2 concentration, we achieve a balance between outside and inside saturation levels of O2.  To make their theory plausible, I honestly believe they would need to change the law of physics.  I could be wrong, but someone would have to explain how air (oxygen) would go into a tire (through the walls) when exterior air pressure is 15psi and interior tire pressure is 30psi or more.  That's like trying to blow air into an inflated tire, with a hose and your mouth.  Please don't fall for this one, I believe technicians and shop owners are smarter than that.

Like to see what the godfather of rubber testing says about the minimum N2% needed....
including the accepted scientific principles and peer reviewed scientific papers...
click link below.

(After reading, click back button to return to this page)

Important paradigm shift in tire maintenance practices!

Want to make money tomorrow? Call us today!

Please give us a call for details on how you can take monetary advantage of the new regulations imposed on all 2007 vehicles.  If you don't want your competition to make 1000% to 3000% profit on a sale of Nitrogen to your customer next week, you need to act now!  We have filling machines at a price level for every budget, some with features not even $10,000 units have.  Depending on your shops size we will tailor a custom fitted machine for the most efficient use, not an overkill for your operation.  Why pay for a standard "off the shelf" generating machine that's larger and higher in maintenance, when a GWR system will fit you exactly?   Don't throw your money out the door year after year!

How much can you really make???

Please note we do offer discounts for cash sales, but leasing programs are available for those that qualify and want to make small monthly payments for 24 to 48 months.  With monthly payments in the $200 range, your cost of goods is only about 20%.  For example, after making the small monthly lease payment, a sale of just one Nitrogen fill per day will net you $400 to $500 per month.  Now multiple that by 25% or 50% of your daily car count (2 to 4 vehicles) and you begin to see the incredible profit potential of this service.  Imagine what you'd pocket with sales of 5, 10 or more jobs per day, it's like having a money tree in the back of the shop! 

If you want a shock, review below the profit generating potential of the GWR Premier Nitrogen Tire Filling Station.  Remember that this is for a shop with only a car count of 10 vehicles per day.
As a footnote... the national average for this size shop is 3 to 4 Nitrogen sales per day.
Fact... You will pay for this machine in 1 to 3 months, with pure profit in your pocket thereafter.


% of Car Count* Service
Labor Cost
Net Profit
Net Profit







2 20% $24.95 $4.00 $6.00 $40.00 $1000.00
3 30% $24.95 $6.00 $9.00 $60.00 $1500.00
4 40% $24.95 $8.00 $12.00 $80.00 $2000.00
5 50% $24.95 $10.00 $15.00 $100.00 $2500.00
6 60% $24.95 $12.00 $18.00 $120.00 $3000.00
7 70% $24.95 $14.00 $21.00 $140.00 $3500.00
8 80% $24.95 $16.00 $24.00 $160.00 $4000.00
9 90% $24.95 $18.00 $27.00 $180.00 $4500.00
10 100% $24.95 $20.00 $30.00 $200.00 $5000.00
This is the most profitable service in a shop, don't miss out on this opportunity!

Direct line to our Sales and Technical Department
1(800) 266-4497
(We are open 2PM to 8PM EST, Monday through Friday)




Should we stop putting air in our tires?

GWR's Deluxe Premire Nitrogen Machine with exclusive 5 tire Auto-Fill (tm) option.  Fill all five tires in 10 minutes with a simple touch of the screen.

  Close up view of optional 8" Touch Screen, aircraft quality gauges and safety lock out on/off switch  (GWR Deluxe Premier Nitrogen Machine).Close up view of our newly upgraded Extreme-Duty Reinforced Polyurethane hones with Strain Relief.

Contact our technical department by calling
1(800) 266-4497 any time between 2pm and 8pm (EST)


Please note that Premier Nitrogen carries a complete line of
high quality parts and tools for Nitrogen and TPMS service!

Tire Stem Caps (Green Styles in Plastic, Chrome and Aluminum)
Exterior Banners for promoting N2 Service
Polyurethane Coiled Air/Nitrogen Hoses
Professional Air/Nitrogen Chucks and Inline Filters
Complete line of TPMS Rebuild Kits for Tire Service Centers
OE Approved TPMS Sensor Activation Tools

TPMS Certified "Plated" Valve Stem Core w/ Red Seal

Click this link to find the best deal on caps and more!
N2 Tools and Accessories


What is Nitrogen?

Nitrogen is a dry, non combustible, inert gas making up 78% of the air we breath.  In the last 30+ years it has begun to find its way into the tires of giant off-highway earthmovers and most every type of race car.

James Dean Indy Car

Across the globe, every major Airliner, Military Aircraft and even the Space Shuttle uses Nitrogen...
Read an excerpt from the Federal Aviation Administration's web site on why they mandated laws requiring all commercial aircraft use Nitrogen in their tires.    Click here!

Aircraft Landing

They main reasons are it improves performance, increases tire mileage, offers better fuel economy and extends the life of the tire's rubber and steel construction materials.

How does that happen?

Since air migrates through rubber, tires loose about 80% of lost air through their sidewalls.  Like a balloon that shrivels up... but much slower.  That is why regular inflation pressure checks are a must, even if nothing is "wrong" you can still loose air pressure at a rate of 1 to 2 lbs per month.  As a note, oxygen that passes through rubber sidewalls can come into contact with steel cords causing them to rust.  Between accelerating the aging process of rubber and corroding steel cords, oxygen reduces overall reliability of modern tires.

Adverse Effects of Under inflation!

Under inflation will cause high tire deflection and heat build-up, which in turn may lead to ply separation.  Low inflation pressure may also cause uneven wearing of the tread and rapid wearing of the shoulder areas.  Additionally there is an  increase in the tire footprint and this increase will eventually lead to damage of a tire's sidewall.  Running just a few pounds below the manufacturers  recommended pressure, can let to failure.  Picture at left is an example of Casing Break Up (CBU) in a bias tire at the lower sidewall caused by running the tire at pressures below those recommended.


Why use Nitrogen?      

1.  Less inflation pressure loss
2.  Reduced wheel corrosion
3.  Prevents inner rubber deterioration by oxidation
4.  Tires run cooler
5.  Increases tread life
6.  Increases fuel mileage
7.  Helps prevent uneven wear

Please note that Under-Inflation is the leading cause of tire failure. Twenty-three per cent (23%) of vehicles have at least one tire under-inflated by more than 20%. Under-inflated tires on your vehicle lead to poor or delayed braking, steering and acceleration.  Operating a vehicle with just one tire under-inflated by 20% (8psi) can reduce the life of the tire by 15,000 km and can increase the vehicle's fuel consumption by 4%.
Oxygen in compressed air permeates through the wall of the tire, thus reducing the tire's inflation pressure. During it's journey through the tire wall, oxygen oxidizes the rubber compounds in the tire, causing under-inflation and deterioration of the rubber.
The Effects of Under Inflation on Tire Wear and Fuel Use
Percentage of Under Inflation Percentage Wear Increase Fuel Use Increase
10% 5% 2%
20% 16% 4%
30% 33% 6%
40% 57% 8%
50% 78% 10%
proper inflation of tyre under inflation of tyre

Dry nitrogen will maintain proper inflation pressure and will prevent auto-ignition, will not corrode rims, extends valve core life, and will help the tire to run cooler.

  • The biggest advantages - Improved tire life!

    Experts in the tire industry indicate that oxidative aging is one of the primary causes of decreased tire life. Oxidative aging is caused by the diffusion of oxygen from the pressurized air cavity of the tire to the outside atmosphere. Tests have shown that if tires are inflated with nitrogen, there is a significant reduction in tire failure

    Why did race cars, military and off-road vehicles switch to Nitrogen?

    Air is about 1/5 Oxygen, and oxygen, especially at high pressures and temperatures, is a very reactive element.  When oxygen reacts with things, the process is called oxidation. When oxidation is extremely rapid, it's called "burning. That's one reason nitrogen is used in off-highway and aircraft tires. These tires run so hot they can actually catch on fire. Nitrogen doesn't support combustion, so nitrogen-filled tires don't add fuel to the flames. And nitrogen helps prevent slower forms of oxidation also.

    Nitrogen prevents other types of corrosion as well

    Oxygen and moisture corrodes aluminum and steel wheels. Oxygen also reacts with rubber, another type of "corrosion". When this corrosion starts, the small particles break off and form rust and dust, which can clog valve cores, causing them to leak. The rough surfaces created from the corrosive action on the wheels leads to tire beads that don't seal properly, causing additional leaks.
    Oxygen also ages the inner liner, the thin layer of rubber inside the tire whose function is to
    keep air away from the carcass. As the inner liner ages, more and more air molecules can pass through it, causing more pressure losses.  As it passes through the rubber, the oxygen can also corrode the steel cords, causing them to rust too.

    Small bits of dust and debris as a byproduct of oxidative corrosion to the wheels and alloy rims can lodge in the valve core seat, causing air leaks.

    Nitrogen also will not degrade the rubber seal in the valve core which extends valve core life and helps prevents core leaks.

    How does Nitrogen help?

    While both nitrogen and oxygen can permeate rubber, nitrogen does it much more slowly.  These pressure losses in a tire can average up to 2 psi a month as a result of the air passing through the sidewalls. On the other hand it might take 6 months to lose 2 psi with nitrogen. And nitrogen is far less reactive. It doesn't cause rust or corrosion on steel or aluminum, and it doesn't degrade rubber. Wheel surfaces stay smooth and clean, rubber remains supple and resilient.

    Any other reasons for using Nitrogen?

    The air around us is full of water vapor, it called humidity!!!  Compressing air concentrates the water in it. Draining the water from your compressor tank daily helps, but unless you have a really efficient air dryer system, chances are that there's a lot of water in your compressed air.

    Remember physics 101...  When you compress air, it takes up much less volume, but the percentage of water by volume is greatly increased!

    ...and what harm does this moisture cause?

    Water vapor in compressed air acts as a catalyst, accelerating rust and corrosion.  Water vapor also absorbs and holds heat. And when it changes from liquid to vapor, water expands tremendously in volume.

    As a result, tires inflated with wet air tend to run hotter and fluctuate in pressure more. That's one of the reasons why racing tires, where fractions of a psi can radically change the handling characteristics, are inflated with dry nitrogen.


  • Did you know???

    Interestingly, all gas molecules in the tire move and react based on their molecular size.  Nitrogen being 4 times larger than Oxygen obviously leaks out much slower!  The bottom line.... tire maintenance is reduced drastically along with actual tire wear.


    Think you know when a tire is under inflated!
    Is the tire 10%, 20%, 30% low???

    Checking Tire Pressure as recommended by NHTSA

    It is important to check your vehicle's tire pressure at least once a month for the following reasons:
    • Most tires naturally lose air over time, between 1 and 2 psi per month.
    • Tires can lose air suddenly if you drive over a pothole or other object or if you strike the curb when parking.
    • With radial tires, it is usually not possible to determine under inflation by visual inspection.
    • Loss of just 20% of the recommended normal air pressure can reduce fuel mileage about 10%
    Flash video of various tire pressure levels

    Every vehicle should have a tire pressure gauge in the glove box or trunk of the vehicle.  Digital or inexpensive digital gauges can be purchased at tire dealerships, auto supply stores, and other retail outlets.

    The vehicle manufacturer's recommended tire inflation pressure is the proper psi when a tire is cold. The term cold does not relate to the outside temperature. Rather, a cold tire is one that has not been driven on for at least three hours. When you drive, your tires get warmer, causing the air pressure within them to increase. Your tires can get warm after just 1 mile of driving.

    Therefore, to get an accurate tire pressure reading, you must measure tire pressure when the tires are cold or compensate for the extra pressure in warm tires.

    Above tire pressure video and technical information provided courtesy of... U.S. Department of Transportation


    At a Glance...

    Nitrogen Compressed Air
    1.  Dry and Clean 1.  Oily and wet
    2.  Remains stable at any temperature, eliminates daily/seasonal pressure changes 2.  Highly reactive element to all (low to high) temperatures and pressure changes
    3.  Eliminates condensation which prevents rim and valve corrosion (rust) 3.  Supports moisture storage inside the wheel which leading to corrosion (rust)
    4.  Slows gas migration through rubber to less than 2psi loss over 6 months 4.  Faster "through the rubber" migration, 1 to 3psi is lost each month


    GWR Technical Department
    1(800) 266-4497
    (Any time between 1pm and 8pm EST)


    If you're still not convinced Nitrogen is
    where the tire world is heading...
    please read on



    Just the Facts.....

    Chemical aging is due to oxygen diffusing through the tire composite and reacting with the internal components. If the rate at which air diffuses through the tire is slowed, the rate of chemical aging will be similarly slowed. (Review the FMVSS 139 for additional information on mechanical aging effects.)

    According to tire manufacturers: - tires with more expensive, 100% halogenated-butyl inner liners lose air at a rate of 2.0-2.5% per month (10 lbs per year @ 35 psi)- tires with cheaper, blended butyl inner liners lose air at a rate 4.00-5.0% per month - for the same inner liner compound, a thicker inner liner will lower the air loss rate - a reduction in air loss rate, by a factor of 2, may be achievable for some tires.

    In on the road tests involving over 7 million miles of truck tires inflated with nitrogen, tire failures were reduced by half and tread life increased by 25% to 30%. The benefits were repeated in the second tire life after re-treading. These mileage comparisons were followed by electron microscope analysis which measured oxygen levels in the tire body and tread of tires inflated with air and then operated on the road until replaced because of failure or tread wear. The results were conclusive; oxygen kills tires over time. Similar tests on automobile tires yielded comparable increases in tire life. (Reference: Million Mile Truck Tires – Available Today by Lawrence Sperberg.)

    In a study reported in Rubber and Plastic News by David Coddington of Exxon Chemical Co. material from tires run for varying periods of road service and inflated with air was tested for tear strength. The laboratory findings; strength values are steadily decreased with increasing service mileage, leveling off at a value below 50% of original strength. In lab testing equivalent to less than 40,000 road miles, the relative strength of oxygen exposed tires declined to under 40% while the material from tires inflated with nitrogen held at over 80%.

    Tire life to failure point in laboratory wheel tests confirmed more than twice the life for the nitrogen inflated tires. (Reference: "Factors in Tubeless Radial Tire Durability", Rubber and Plastic News, August 1993.)

    Nitrogen inflation has advantages in that tires will hold pressure longer using nitrogen. Nitrogen’s diffusion rate is 25% to 30% lower than air, significantly reducing tire pressure loss between inflation checks. Under inflated tires wear rate is increased to the point where a tire 10% under inflated will lose approximately 7% of it service life. On the other hand, properly inflated tires have less resistance to rolling. (References: Goodyear Application Bulletin #17 and Bandag Tread Guide, September 1995.)

    Under inflated tires can cut fuel economy by as much as 2% per pound of pressure below the recommended level. Therefore a tire that is just five pounds below its setting will consume 10% more fuel. Additionally, tires with low air pressure are more sluggish in their response to steering input... compromising your vehicle’s handling.



    Technical Synopsis on...
    Proper Tire Inflation
    Keep you tires and fuel usage at optimum!

    Have some fun, take the tire quiz
    Air, your tires and other interesting facts!
    P.S.  It's tougher than you think.

    Are you servicing new tire monitoring systems... you will need this tool?
    Universal Tire Pressure Sensor Activation Tool
    GWR offers the #1, OEM Approved tool in the country!

    TPM test

    Frequently Ask Questions
    FAQ's from consumers and shops
    This is the real deal, the proof is in the testing.


    Charts and Technical Specifications on Generators 
    The Facts and Real Differences
    The proof is in "their" specifications.

    Tire Safety according to Uncle Sam 
    Tire Safety Synopsis from the NHTSA
    Everything rides on it....

    Tire Safety Logo


    They endorse Nitrogen for tires!

    “Goodyear supports the use of nitrogen, based on the ability of the tire to retain pressure for a longer period of time.”

    “Nitrogen can provide stronger casings for more retread ability.”
    “While both nitrogen & oxygen can permeate rubber, nitrogen does it much more slowly.”
    "When nitrogen is used as the inflation media, the change in rubber properties is significantly slowed down or even halted."
    Michelin supports the use of Nitrogen, based on its ability to better retain gas volume over a period of time.
    "Tires inflated with Nitrogen will run cooler than those inflated with air.  Nitrogen bleeds through the inner liner or tube at a slower rate than regular compressed air."
    Continental Tire, tires, tire, Tires, Continental, car tires, tire dealers, tire pressure, tire safety, continental tire, continental tires, continental tirebowl "Nitrogen reduces the risk of self ignition and tire burst, if tires are overheated.  Due to its the reliability, we are very satisfied with this service."
     "Even the most energy-saving tires lose efficiency if under-inflated. Nitrogen inflation systems help maintain tire pressure because nitrogen does not permeate through tires as readily as air does. Since the oxygen in air accelerates tire wear, a 100% nitrogen fill is kinder to tires, as well."  EPA (Environmental Protection Agency - Federal Government)
    “Nitrogen is slower to leak out through the casing than air and does not carry moisture that can lead to rust in steel cords and cables.”
    Recently, nitrogen gas (for use in inflating tires) has become available to the general consumer through many retailers. General Motors does not oppose the use of purified nitrogen as an inflation gas for tires. Nitrogen inflation can provide benefit by reducing gas migration (pressure loss) at the molecular level through the tire structure. NHTSA (National Highway Traffic Safety Administration) has stated that the inflation pressure loss of tires can be up to 5% a month. Another potential benefit of nitrogen is the reduced oxidation of tire components.



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