Corvette Club of Utah

Product Service Bulletin
Important Information To better Service Your Customers

Post For Ready Reference

May 23, 2006


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.

How to Determine the Correct Inflation Pressure?

  • 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.

  • 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.

  • 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.

    Checking Inflation Pressure

  • Use good quality tire gauge and check it regularly for accuracy.

  • 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.

  • 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.

  • 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.

  • Don't forget to check inflation pressure of the spare.

    Potential Consequences of Improper inflation

  • Underinflation can lead to excessice heat buildup, which can result in early removal from service or tire failure.

  • Underinflation may create an overload condition that can lead to tire failure.

  • Underinflated tires can lead to loss of fuel economy.

  • Overinflated tires can be more susceptible to road hazards or impact damage.

  • Overinflated tires or underinflated tires can lead to irregular center line or shoulder wear.


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