Lexus 2003 SC430 Owner's Manual page 335

CHASSIS
– TIRES AND WHEELS
Standard and run–flat tires:
Tire size
Tire inflation pressure
Recommended cold tire inflation pressure
Wheel size
Wheel nut torque
Compact spare tire:
Tire size
Tire inflation pressure
Wheel size
Wheel nut torque
NOTE:
For complete information on tires (e.g. replacing tires or replacing wheels), see "Checking tire pressure" through "Aluminum wheel
precautions" on page 321 through 330.
318
245/40ZR18
245/40ZR18 93Y
Front 230 kPa (2.3 kgf/cm 2 or bar, 33 psi)
Rear 230 kPa (2.3 kgf/cm or bar, 33 psi)
2
For sustained high speeds above 180 km/h (112 mph), in countries
where such speeds are permitted by law, add 80 kPa (0.8 kgf/cm
bar, 12 psi) to the front tires and rear tires, but never exceed the
maximum cold tire pressure molded on the tire sidewall.
18 x 8 JJ
103 N·m (10.5 kgf·m, 76 ft·lbf.)
T145/70R17 106M
420 kPa (4.3 kgf/cm , 4.2 bar, 60 psi)
2
17 x 4T
103 N·m (10.5 kgf·m, 76 ft·lbf.)
2 or