Subaru WRX Manuals 2025 WRX Owner’s Manual | Page 474

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Specifications
& Electrical System
Battery type Alternator s12aa03
75D23L
12 V-150 A Spark plugs SILKFR8A6( NGK)
& Tires
s12aa05
Tire size
245 / 40R18 97Y
245 / 35R19 93Y
Wheel size
18 6 8 1 / 2J
19 6 8 1 / 2J
Pressure
Front
Rear
33 psi( 230 kPa, 2.3 kgf / cm 2)
35 psi( 240 kPa, 2.4 kgf / cm 2)
32 psi( 220 kPa, 2.2 kgf / cm 2)
Wheel nut tightening torque
89 lbf · ft( 120 N · m, 12 kgf · m)* 1
* 1: This torque is equivalent to applying approximately 88 to 110 lbf( 40 to 50 kgf) at the end of the wheel nut wrench. If you have tightened the wheel nuts by yourself, have the tightening torque checked at the nearest automotive service facility as soon as possible. For the wheel nut tightening procedure, refer to“ Changing a Flat Tire” FP379.