Owners Manual

High-Speed Operation

{CAUTION:

Driving at high speeds, 100 mph (160 km/h)

or higher, puts an additional strain on tires.

Sustained high-speed driving causes

excessive heat build up 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.

If your vehicle has P255/50R20 104V size tires

installed on the rear axle, they will require inﬂation

pressure adjustment when driving your vehicle

at speeds above 99 mph (160 km/h). Set the cold

inﬂation pressure, for the rear tires only, to the

maximum inﬂation pressure shown on the

tire sidewall, or 38 psi (262 kPa), whichever is

lower. See the example following. When you end

this high-speed driving, return the tires to the

cold tire inﬂation pressure shown on the Tire and

Loading Information label. See Loading Your

Vehicle on page 350.

Example:

You will ﬁnd the maximum load and inﬂation

pressure molded on the tire’s sidewall, in small

letters, near the rim ﬂange. It will read something

like this: Maximum load 690 kg (1521 lbs)

300 kPa (44 psi) Max. Press.

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