2003 Toyota MR2 Spyder Owners Manual - Page 169

03 07.07 Warning: The temperature grades for this tire are established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure. 2003 MR2 from Aug. '03 Prod. (OM17511U) 145