2006 Lexus SC 430 Owners Manual - Page 225

4-3. Do-it-yourself maintenance CAUTION n Take care that the selector switch is set correctly If the tires whose ID code is registered at "MAIN" are used, the system will not work correctly if the selector switch is set to "2nd". If the tires whose ID code is registered at "2nd" are stored nearby, the system will mistakenly detect their tire inflation pressure (and vice versa). n When inspecting or replacing tires Observe the following instructions, as failure to do so may cause dangerous handling characteristics resulting in loss of control and could cause death or serious injury. l Do not mix radial, bias belted, or bias-ply tires on your vehicle, or use tires other than the manufacturer's recommended size. l Do not mix summer and all season tires on your vehicle. l Do not use tires other than the manufacturer's designated tires, and never mix tires or wheels of different size to the originals. l Do not mix run-flat and standard tires. l Consult your Lexus dealer before purchasing new tires. If you change from run- 4 Maintenance and care flat tires to standard tires, a spare tire should also be purchased. NOTICE n Low profile tires Low profile tires like P245/40R18 93V, 245/40ZR18 or 245/40R18 93Y may cause greater damage than usual to the tire wheel when receiving impact from the road surface. Therefore pay attention to the following: l Be sure to use proper tire inflation pressure. If the tire inflation pressure is low, the tire may cause greater damage. Check the tire inflation pressure on a regular basis. (→P.217) l Avoid driving onto high, sharp-edged objects and other road hazards. If this can- not be avoided, be careful and drive as slowly as possible. 215