* Your existing wheels: The bolt pattern (often expressed as something like 5x5.5" or 6x5.5") is usually stamped on the back of the wheel itself.
* Your owner's manual: This should specify the correct bolt pattern for your specific vehicle.
* The vehicle's data plate: This plate, usually located in the driver's side doorjamb, may contain information about the wheels and tires.
* A reputable parts website: Enter your vehicle's year, make, model, and engine size into a website like AutoZone, Advance Auto Parts, or others. They'll usually show you the correct bolt pattern.
Don't rely on generic information online – always verify using one of the methods above to ensure you get the right bolt pattern for your specific 1988 Dodge Ramcharger. Using the wrong bolt pattern is extremely dangerous.