Run-Flat Tires (STS-V)If your vehicle has run-flat tires, there is no spare tireand no tire changing equipment. Your vehicle also has aTire Pressure Monitor System (TPMS) which will alertyou if there is a loss of tire pressure in any of the tires.See Tire Pressure Monitor System on page 5-67.{CAUTION:When the low tire warning light is displayed onthe instrument panel cluster, your vehicle’shandling capabilities will be reduced duringsevere maneuvers. If you drive too fast, youcould lose control of your vehicle. You orothers could be injured. Do not drive over55 mph (90 km/h) when the low tire warninglight is displayed. Drive cautiously and checkyour tire pressures as soon as you can.If a tire goes flat, you will not need to stop on the sideof the road to change the tire. You can just keep ondriving. The vehicle’s run-flat tires can operate effectivelywith no air pressure for up to 50 miles (80 km) atspeeds up to 55 mph (90 km/h). The shorter thedistance you drive and the slower the speed, the greaterthe chance that the tire will not have to be replaced.When a tire is filled with air, it provides a cushionbetween the road and the wheel. Because you will nothave this cushion when driving on a deflated run-flattire, try to avoid potholes that could damage your wheeland require replacement of it.Some road hazards can damage a tire beyond repair.This damage could occur even before you havedriven on the tire in a deflated condition. When a tirehas been damaged, or if you have driven any distanceon a deflated run-flat tire, check with an authorizedrun-flat tire service center, as soon as possible,to determine whether the tire can be repaired or shouldbe replaced. To maintain your vehicle’s run-flatfeature, all replacement tires must be self-supportingtires. To locate the nearest GM or authorized run-flatservicing facility, call Roadside Service. See RoadsideService on page 7-5 for details.5-64
