Subaru Forester Manuals 2023 Forester Owner's Manual | Page 474

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Tires and wheels
Tire inflation pressure label
Check the tire pressures when the tires are cold . Use a pressure gauge to adjust the tire pressures to the values shown on the tire inflation pressure label . The tire inflation pressure label is located on the door pillar on the driver ’ s side .
Driving even a short distance warms up the tires and increases the tire pressures . Also , the tire pressures are affected by the outside temperature . It is best to check tire pressure outdoors before driving the vehicle .
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 1 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 .