* Bolt Pattern: The most critical factor. Both the S10 and the Xtreme need to have the same number of lug nuts and the same spacing between them (e.g., 5x4.75"). If the bolt patterns don't match, the wheels won't bolt on. Check your S10's owner's manual or the wheels themselves to determine the bolt pattern.
* Wheel Offset: This refers to the distance between the mounting surface of the wheel and the centerline of the wheel. Incorrect offset can cause clearance issues with the suspension, brakes, or body. A wheel with too much offset might rub the suspension components, while a wheel with too little offset might rub the fenders or body. The Xtreme's offset might differ from your S10's original wheel offset.
* Wheel Diameter and Width: The diameter (size of the wheel) should be compatible with your existing tires and suspension. Too large a diameter can cause rubbing, while too small a diameter may affect your speedometer accuracy. The width also plays a role – a wider wheel may require different offset and may rub on fenders or other components if it's too wide.
* Backspacing: Similar to offset, backspacing is the distance between the mounting surface and the inside edge of the wheel. Incorrect backspacing can lead to clearance problems.
In short: While they *might* fit, it's highly unlikely without checking the specific specs of the Xtreme rims and comparing them to your 1988 S10's specifications. You MUST verify the bolt pattern, offset, diameter, width, and backspacing to ensure a safe and proper fit. If you're unsure, consult a tire shop or a mechanic experienced with wheel and tire installations. They can help you determine compatibility and avoid potential problems.
