Buick Regal: Tire Pressure for High-Speed Operation
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 .
Tire Pressure
Tires need the correct amount of air pressure to operate effectively.
Notice: Neither tire underinflation nor overinflation is good.
Underinflated tires, or tires that do not have enough air, can re ...
Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS) uses radio and sensor technology to check tire pressure levels. The TPMS sensors monitor the air pressure in your tires and transmit tire pressure readings to a ...
See also:
Installation of child restraint systems by use of lower and tether anchorages
(LATCH)
WARNING
● Child restraint systems and seatbelts can become hot in a vehicle that has
been closed up in sunny weather; they could burn a small child. Check the child
restraint system before ...
Seat belt warning light and
chime
The light and chime remind you to fasten your
seat belts. The light illuminates whenever the
ignition switch is placed in the ON or START
position and remains illuminated until the driver’s
se ...
Uniform tire quality grading
DOT (Department of Transportation) Quality Grades: All passenger car tires must
conform to federal safety requirements in addition to these grades.
Quality grades can be found where applicable on t ...
