Chevrolet 2009 Silverado 1500 Pickup Spezifikationen PDF herunterladen (Seite 484)

100

101

How to Check

Use a good quality pocket-type gage to check tire

pressure. You cannot tell if your tires are properly

inﬂated simply by looking at them. Radial tires

may look properly inﬂated even when they’re

underinﬂated. Check the tire’s inﬂation pressure

when the tires are cold. Cold means your vehicle

has been sitting for at least three hours or driven

no more than 1 mile (1.6 km).

Remove the valve cap from the tire valve stem.

Press the tire gage ﬁrmly onto the valve to get a

pressure measurement. If the cold tire inﬂation

pressure matches the recommended pressure on

the tire and loading information label, no further

adjustment is necessary. If the pressure is low, add

air until you reach the recommended amount.

If you overﬁll the tire, release air by pushing on

the metal stem in the center of the tire valve.

Recheck the tire pressure with the tire gage.

Be sure to put the valve caps back on the valve

stems. They help prevent leaks by keeping out dirt

and moisture.

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.

Vehicles with P265/70R17 or P275/55R20 size tires

require inﬂation pressure adjustment when driving the

vehicle at speeds of 100 mph (160 km/h) or higher. Set

the cold tire inﬂation pressure to 3 psi (20 kPa) above the

recommended cold tire pressure shown on the Tire and

Loading Information label.

When you end this high-speed driving, return the tires to

the cold inﬂation pressure shown on the Tire and Loading

Information label. See Loading the Vehicle on page 4-32

and Inﬂation - Tire Pressure on page 5-73.

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