1994 GMC Safari Owner's Manual - Page 271

Each new wheel should havethe same load carrying capacity, diameter, width, offset, and be mounted the same way as the one it replaces. If you need to replace any of your wheels, wheelbolts, or wheel nut,s, replace them only with new GM original equipment parts. This way, you nuts for your will be sure to have the right wheel, wheel bolts, and wheel GM model. I NOTICE: The wrong wheel canalso cause problems with bearing life, brake cooling, speedometer/odometer calibration, headlight aim, bumper height, vehicle ground clearance, and tire or tire chain clearance to the body and chassis. Used Replacement Wheels 6-53