Lexus GS300 1998 Owner's Manual page 397

CHASSIS
Tire size
Tire inflation pressure
Recommended cold tire inflation pressure
Wheel size
Wheel nut torque
CHECKING BRAKE FLUID
63G002–1
384
225/55R16 94V
Front 220 kPa (2.2 kgf/cm 2 or bar, 32 psi)
Rear 220 kPa (2.2 kgf/cm 2 or bar, 32 psi)
For sustained high speeds above 160 km/h (100 mph), in
countries where such speeds are permitted by law, add 80
kPa (0.9 kgf/cm 2 , 0.8 bar, 12 psi) to the front tires and rear
tires, but never exceed the maximum cold tire pressure
molded on the tire sidewall.
16 x 7 JJ
1/2
103 N·m (10.5 kgf·m, 76 ft·lbf.)