High Speed Operation{CAUTION:Driving at high speeds, 100 mph (160 km/h)or higher, puts an additional strain on tires.Sustained high-speed driving causesexcessive heat build up and can cause suddentire failure. You could have a crash and you orothers could be killed. Some high-speed ratedtires require inflation pressure adjustment forhigh speed operation. When speed limits androad conditions are such that a vehicle canbe driven at high speeds, make sure the tiresare rated for high speed operation, in excellentcondition, and set to the correct cold tireinflation pressure for the vehicle load.If you will be driving at high speeds, speeds of100 mph (160 km/h) or higher, where it is legal, setthe cold inflation pressure to the maximum inflationpressure shown on the tire sidewall, or 38 psi (265 kPa),whichever is lower. See the example following.When you end this high-speed driving, return the tiresto the cold inflation pressure shown on the Tire andLoading Information label. See Loading Your Vehicleon page 4-45.Example:You will find the maximum load and inflation pressuremolded on the tire’s sidewall, in small letters, nearthe rim flange. It will read something like this: Maximumload 690 kg (1521 lbs) 300 kPa (44 psi) Max. Press.For this example, you would set the inflation pressure forhigh-speed driving at 38 psi (265 kPa).Tire Pressure Monitor SystemYour vehicle may have this feature. The Tire PressureMonitor (TPM) system uses radio and sensor technologyto check tire pressure levels. If your vehicle has thisfeature, sensors are mounted on each tire and wheelassembly, except for the compact spare tire and wheel.Tire pressure readings are sent to a receiver locatedin the vehicle once every 60 seconds while the vehicle isbeing driven, and once every 60 minutes if the vehicleis stationary for more than 15 minutes.5-62
