GM Service Manual Online
For 1990-2009 cars only

Most vehicles are now equipped with steel belted, all-season radial tires as standard equipment. These tires provide a soft, quiet ride, good handling, and long tread life. These tires provide all-season traction and low rolling resistance in order to help improve fuel economy.

These tires have higher snow traction than non all-season radial tires previously used. For this reason, these qualify as snow tires. You can identify these tires by an M+S molded in the tire sidewall after the size. The suffix MS also is molded in the sidewall after the TPC specification number.