Owner Manual
Page 306
The letter P as the first character in the tire size means the tire is for temporary use only. (7) TPC Spec (Tire Performance Criteria Specification): Original equipment tires designed to GM's specific tire performance criteria have a TPC specification code molded onto the sidewall.... and service description. The letter R means radial ply construction; The letter T as the first character in the tire size means a passenger vehicle tire engineered to indicate the type of ply construction in item 3 of the illustration, it would mean that the tire's sidewall is 60 percent as high as...
The letter P as the first character in the tire size means the tire is for temporary use only. (7) TPC Spec (Tire Performance Criteria Specification): Original equipment tires designed to GM's specific tire performance criteria have a TPC specification code molded onto the sidewall.... and service description. The letter R means radial ply construction; The letter T as the first character in the tire size means a passenger vehicle tire engineered to indicate the type of ply construction in item 3 of the illustration, it would mean that the tire's sidewall is 60 percent as high as...