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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 P265/65R18 or P285/45R22
size tires and you will be driving at high speeds,
speeds of 100 mph (160 km/h) or higher, set
the cold inflation pressure to 3 psi (20 kPa) above
the recommended 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 Your
Vehicle on page 372 and Inflation - Tire Pressure
on page 460.
Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS) uses
radio and sensor technology to check tire pressure
levels. If your vehicle has this feature, sensors
are mounted on each tire and wheel assembly,
except the spare tire. The TPMS sensors monitor
the air pressure in your vehicle’s tires and
transmit tire pressure readings to a receiver
located in the vehicle.
The TPMS is designed to alert the driver, if a low
tire pressure condition exists. If your vehicle has the
Driver Information Center (DIC), the driver may also
check tire pressure levels using the DIC.
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