Subaru WRX & WRX STI Manuals 2018 WRX & WRX STI Owner’s Manual | Page 497

Maintenance and service/Tires and wheels
temperature outside. By way of example,
the following table shows the required tire
pressures that correspond to various out-
side temperatures when the temperature
in the garage is 608F (15.68C).
Example:
Tire size: 245/40R18 97W
Standard tire pressures:
Front: 33 psi (230 kPa, 2.3 kgf/cm 2 )
Rear: 32 psi (220 kPa, 2.2 kgf/cm 2 )
Garage temperature: 608F (15.68C)
Outside
temperature
Adjusted pressure
[psi (kPa, kgf/cm 2 )]
Front
Rear
308F (−18C) 36 (250, 2.5)
35 (240, 2.4)
108F (−128C) 38 (260, 2.6) 37 (255, 2.55)
−108F (−238C) 40 (275, 2.75) 39 (270, 2.7)
If the low tire pressure warning light
illuminates when you drive the vehicle in
cold outside air after adjusting the tire
pressures in a warm garage, re-adjust the
tire pressures using the method described
above. Then, increase the vehicle speed
to at least 20 mph (32 km/h) and check to
see that the