Subaru WRX & WRX STI Manuals 2018 WRX & WRX STI Owner’s Manual | Page 529

Specifications/Specifications 12-9 & Temporary spare tires Temporary spare tire size T145/70D17 Temporary spare tire inflation pressure (recommended cold tire inflation pressure) 60 psi (420 kPa, 4.2 kgf/cm 2 ) Wheel nut tightening torque T135/70D18 205/50R17 205/45R18 33 psi (230 kPa, 2.3 kgf/cm 2 ) 1 38 psi (260 kPa, 2.6 kgf/cm 2 ) 2 89 lbf·ft (120 N·m, 12 kgf·m)* * *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. *2: For the wheel nut tightening procedure, refer to “Changing a flat tire” F9-4. & Brake disc If you need information on the usage limit value of brake discs and the method for measuring them, consult your SUBARU dealer.