2010 Lexus IS 250 Owners Manual - Page 629
2010 Lexus IS 250 Manual
Page 629 highlights
6-1. Specifications Radial tires or bias-ply tires A radial tire has "RADIAL" on the sidewall. A tire not marked "RADIAL" is a bias-ply tire. TUBELESS or TUBE TYPE A tubeless tire does not have a tube and air is directly filled in the tire. A tube type tire has a tube inside the tire and the tube maintains the air pressure. Load limit at maximum cold tire inflation pressure Maximum cold tire inflation pressure This means the pressure to which a tire may be inflated. (→P. 418) (→P. 542) Uniform tire quality grading For details, see "Uniform tire quality grading" that follows. Summer tire or all season tire (→P. 418) An all season tire has "M+S" on the sidewall. A tire not marked "M+S" is a summer tire. "TEMPORARY USE ONLY" (→P. 497) A compact spare tire is identified by the phrase "TEMPORARY USE ONLY" molded into its sidewall. This tire is designed for temporary emergency use only. Run-flat tire (RFT) or standard tire (→P. 554) This vehicle can be equipped with either run-flat tires (RFT) or standard tires. A "RFT" or "DSST" mark is molded on the sidewall of the run-flat tire. 552