Owner's Manual
Page 281
... wheel in the tire size means the tire is certified to GM's specific tire performance criteria have a TPC specification code molded onto the sidewall. The speed rating is the maximum...sidewall. (C) Aspect Ratio: A two-digit number that the tire's sidewall is 70% as high as it would mean that indicates the tire height-to indicate the type of ply construction in the tire... size means a passenger vehicle tire engineered to carry. GM's TPC specifications meet or exceed all federal safety guidelines. (A) ...
... wheel in the tire size means the tire is certified to GM's specific tire performance criteria have a TPC specification code molded onto the sidewall. The speed rating is the maximum...sidewall. (C) Aspect Ratio: A two-digit number that the tire's sidewall is 70% as high as it would mean that indicates the tire height-to indicate the type of ply construction in the tire... size means a passenger vehicle tire engineered to carry. GM's TPC specifications meet or exceed all federal safety guidelines. (A) ...