2006 Lexus GS 300 Owners Manual - Page 1207

CHASSIS RUN−FLAT TIRES This vehicle can be equipped with either run−flat tires (RFT) or standard tires. You may continue driving on the vehicle with run−flat tires even if any tire goes flat. It may be able to run for a maximum of 160 km (100 miles) at a speed below 90 km/h (55 mph) after the tire pressure warning light comes on. When you drive your vehicle after the tire pressure warning light comes on, the tire must be replaced. Do not use the repaired tire. Run−flat tires characteristics: The vehicle with run−flat tires helps you to continue driving for up to 160 km (100 miles) at the moderate speed and do not ever exceed 90 km/h (55 mph) even with a flat tire. After such usage, the tire must be replaced. If you are not sure, consult your Lexus dealer. If you have a flat tire, decrease the speed and drive at lower speed to reduce the extent to which the tire is damaged. However, in some conditions (such as at high temperatures), you could not continue driving for up to 160 km (100 miles). The use of non−genuine wheels may prohibit optimum performance. G63004 The run−flat tires equipped on this vehicle are ones dedicated for GS430/300. Do not use them on another model. Do not mix run−flat tires with standard tires. The tire warranty book covers the detailed information on run−flat tires. For details, see the tire warranty book. A "RFT" or "DSST" mark is molded on the sidewall of the run−flat tire. If you cannot distinguish between the standard tire and run−flat tire, consult Lexus dealer. If you have a flat tire, you have to take a different action depending on whether the tires are standard tires or run−flat tires. Tire pressure warning system The tire pressure warning system is equipped to warn you of the low tire inflation pressure. For details, see "Tire pressure warning system" on page 440. 561