11-24 Maintenance and service / Tires and wheels
When a tire becomes warm , the air inside it expands , causing the tire pressure to increase . Be careful not to mistakenly release air from a warm tire to reduce its pressure .
NOTE
. The air pressure in a tire increases by approximately 4.3 psi ( 30 kPa , 0.3 kgf / cm2 ) when the tire becomes warm .
. The tires are considered cold when the vehicle has been parked for at least three hours or has been driven less than one mile ( 1.6 km ).
WARNING
Do not let air out of warm tires to adjust pressure . Doing so will result in low tire pressure .
Incorrect tire pressures detract from controllability and ride comfort , and they cause the tires to wear abnormally .
1 ) Correct tire pressure ( tread worn evenly ) Roadholding is good , and steering is responsive . Rolling resistance is low , so fuel consumption is also lower .
2 ) Under inflated tire ( tread worn on shoulders ) Rolling resistance is high , so fuel consumption is also higher .
3 ) Over inflated ( tread worn in the center ) Ride comfort is poor . Also , the tire magnifies the effects of road-surface bumps and dips , possibly resulting in vehicle damage .
If the tire inflation pressure label shows tire pressures for the vehicle when fully loaded , adjust the tire pressures to the values that match the loading conditions .
WARNING
Driving at high speeds with excessively low tire pressures can cause the tires to deform severely and to rapidly heat up . A sharp increase in temperature could cause tread separation , and destruction of the tires . The resulting loss of