1994 Cadillac Fleetwood Owner's Manual - Page 309

The tirehas a puncture, cut, or other damage that can't be repaired well because of the size or location of the damage. Buying New Tires To find out what kind and size of tires you need, look at the Tire-Loading Information label. The tires installed on your vehiclewhen it was new had Tire a Performance Criteria Specification (TPC Spec) number on each tire's sidewall. When you get new tires, get ones with that same TPC Spec number. That way, your vehiclewill continue to have tires that are designed to give proper endurance, handling, speed rating, traction, ride and other things during normal service on your vehicle.If your tires have an all-season tread design, the TPCnumber will be followed by a "MS" (for mud and snow). If you ever replace your tires with those not having a TPC Spec number, make sure they are thesame size, load range, speed rating and construction type (bias,bias-belted or radial) as your original tires.