1993 Chevrolet Corvette Owner's Manual - Page 287

Service & Appearance Care Tra~ti~n-A, C 6, 3% traction grades, from highest to 3 .lowest are:A, B, and C. They represent the tire's ability tostop on wet pavement as measured under controlled conditions on specified ,government surfaces of test asphalt and concrete. A tire marked C may have podr.tractionp-erformance. Warning: The tractiongrade assigned to.this tire is based on braking (straightahead) traction tests and does not include cornering (turning) traction. Temperature-A, B, C The temperaturegrades are A (the highest), B,and'C, representing the tire's-resistanceto the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel: Sustained high temperature can cause the inaterid af the tire to degenwate.-and reduce tire @e, and excessive temperature lead to. can sudden tire failure. The-gradeC corresponds a level of performance which d l passenger car tires must meet under:the Federal Motor Vehicle Sa€ety Standard NO.. Grades B.and A 109. represent higher levels of perfomnance on the laboratory test wheel than the minimum required by law. to. ...186. Warning: The temperatute grade for this tire 'is established for a tire is that properly inftated and not overloaded. Excessive speed, underinflation, or excessive loading,iither separately or in combination, cah cause heat buildup and possibletire failure. Those gradesare molded on the sidewalls of passenger car tires. While the tires availableas standard or optional equipment on General Motors vehicles may vary with. respect these to grades, all such tires meet Gene$d. Motors performance standards and have been appToved for use QII General Motors vehicles. All passenger type (P Metric) tifes .must conformto federal safety requirements in addition these. to grades.