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Product Service Bulletin
May 23, 2006
PSB#2006-20
| TO: |
Goodyear Company Owned Outlets
Goodyear Contract Dealers
Kelly Dealers
Dunlop Dealers
Associate Brand Dealers |
| Subject: |
Tire Inflation Recommendations for Auto and Light Truck Tires |
Maintaining proper tire inflation is the single most important element of tire care.
By inflating tires to the correct inflation pressure during installation and again when customers
return for service and rotation, you can help your customers receive the maximum benefit from
their tires. For example, a 4 psi (27.8 kPa) reduction in inflation pressure can result in 10% loss
in treadwear over the life of the tire.. When customers are satisfied with their tire performance,
they are much more likely to be loyal and purchase the same brand when it is time for
replacement. Please review the following information to help you properly inflate tires.
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Always use the inflation recommended by the vehicle manufacture for the approved
original equipment tire size. You can find the vehiicle manufacturer's recommended tire inflation pressure in the owners manual,
posted in the edge of the driver's door, on a door post or on the inside of the glovebox.
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The inflation pressure on the side wall of the tire is the MAXIMUM operating
pressure for the tire. It is not necessarily the correct inflation pressure for the vehicle.
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When tires other than the approved original equipment sizes are applied to vehicles, it is
necessary to use load and inflation tables to determine proper inflation pressure.
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Use good quality tire gauge and check it regularly for accuracy.
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Always check inflation when tires are COLD: when the vehicle has been driven less
than one mile (1.6 km) or at least one hour after driving. Inflation pressure increases as tires heat up during driving. If you
must check inflation when tires are hot, add 4 psi (27.8 kPa) the recommended cold inflation pressure.
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Air pressure in a tire goes up (in warm weather) or down(in cold weather) 1-2 pounds
for every 10 degress Fahrenheit (5.5 degrees Celcius) of temperature change.
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It is common for tires lose two or more psi (13.8 kPa) per month so regular inflation
checks are important. having consumers check inflation pressure once a month and before a long trip is a good rule of thumb.
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Don't forget to check inflation pressure of the spare.
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Underinflation can lead to excessice heat buildup, which can result in
early removal from service or tire failure.
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Underinflation may create an overload condition that can lead to tire failure.
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Underinflated tires can lead to loss of fuel economy.
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Overinflated tires can be more susceptible to road hazards or impact damage.
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Overinflated tires or underinflated tires can lead to irregular center line or shoulder wear.
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