GM Service Manual Online
For 1990-2009 cars only

Alloy Wheel Specifications

Description

Specifications

Alloy Wheels

Rim Width Code

8J

Diameter Code

18, 19

Maximum Permissible Radial runout All Models

0.4 mm

Offset

18" x 8", 19" x 8"

48 mm (positive)

Inflation Pressure Specifications

Wheel

Tire Designation

Recommended Cold Inflation kPa

Up to 3 Passengers

Up to Max. Load

Front

Rear

Front

Rear

8J x 18 alloy

245/45 R18 96V

230

230

250

270

8J x 19 alloy

245/40 R19 94W

250

250

250

270

For speeds above 160 km/h

250

250

270

300