* Bolt Pattern: The bolt pattern (number of lug nuts and their spacing) is almost certainly different between a 1992 GMC Sierra and a 2013 Jeep Wrangler. These need to match precisely.
* Wheel Offset: The offset (how far the wheel's mounting surface is from the centerline) will likely be different. This affects how far the wheel sits inside or outside the wheel well. An incorrect offset can cause rubbing, affect handling, and potentially damage the vehicle.
* Hub Bore: The size of the center hole in the wheel (hub bore) needs to match the hub on your GMC's axle.
* Wheel Backspacing: This is related to offset, but refers specifically to the distance between the mounting surface and the back of the wheel. Improper backspacing can lead to clearance issues.
* Wheel Size and Tire Size: Even if the bolt pattern and other dimensions match, the overall diameter of the wheel and tire combination from a Wrangler might be significantly different, affecting speedometer accuracy, rubbing, and potentially your vehicle's handling and suspension.
In short: You need to check the specifications of both the Jeep Wrangler wheels and your GMC Sierra's wheels to compare bolt pattern, offset, hub bore, and backspacing. If these don't match exactly, the wheels won't fit properly and it's unsafe to try to force them. A tire shop or automotive parts store can help you find this information.
