Tire Pressure for High-Speed Operation

Driving at high speeds, 160 km/h (100 mph) or higher, puts an additional strain on tires. WARNING
Driving at high speeds, 160 km/h (100 mph) or higher, puts an additional strain on tires.

Sustained high-speed driving causes excessive heat buildup and can cause sudden tire failure.

You could have a crash and you or others could be killed. Some high-speed rated tires require inflation pressure adjustment for high-speed operation. When speed limits and road conditions are such that a vehicle can be driven at high speeds, make sure the tires are rated for high-speed operation, in excellent condition, and set to the correct cold tire inflation pressure for the vehicle load.

Vehicles with P235/50R18 size tires require inflation pressure adjustment when driving the vehicle at speeds of 160 km/h (100 mph) or higher.

Set the cold inflation pressure to 270 kPa (39 psi).

Vehicles with P245/40R19 size tires require inflation pressure adjustment when driving the vehicle at speeds of 160 km/h (100 mph) or higher.

Set the cold inflation pressure to 310 kPa (45 psi).

Return the tires to the recommended cold tire inflation pressure when high-speed driving has ended. See Vehicle Load Limits  and Tire Pressure .

    See also:

    Cruise Control Light
    This light is white whenever the cruise control is set and turns green when the cruise control is active. The light goes out when the cruise control is turned off. See Cruise Control for mo ...

    Vehicle Load Limits
    It is very important to know how much weight the vehicle can carry. This weight is called the vehicle capacity weight and includes the weight of all occupants, cargo, and all nonfactory-installed ...

    Storing a Favorite Station
    For vehicles with an XM radio, a maximum of 36 stations can be stored as favorites using the six softkeys located below the radio station frequency tabs and by using the radio FAV button. Press ...