2007 Cadillac CTS-V Owner's Manual - Page 405

The high-performance tires, size P225/55R16, P225/50R17 or P2225/50R18 require inflation pressure adjustment when driving your vehicle at speeds of 100 mph (160 km/h) or higher. Set the cold tire inflation pressure to the maximum inflation pressure shown on the tire sidewall, or 38 psi (262 kPa), whichever is lower. See the example following. Example: You will find the maximum load and inflation pressure molded on the tire's sidewall, in small letters, near the rim flange. It will read something like this: Maximum load 710 kg (1565 lbs) 350 kPa (51 psi) Max. Press. For this example, you would set the cold inflation pressure for high-speed driving at 38 psi (262 kPa) When you end high-speed driving, return the tires to the cold inflation pressures shown on the tire and loading information label. See Loading Your Vehicle on page 321. Tire Pressure Monitor System Your vehicle may have a Tire Pressure Monitor System (TPMS). This system uses radio and sensor technology to check tire pressure levels. If your vehicle has this feature, sensors are mounted on each the tire and wheel assembly, except for the spare tire. The TPMS sensors monitor the air pressure in the vehicle's tires and transmits the tire pressure readings to a receiver located in the vehicle. If your vehicle has the base audio system, the Driver Information Center (DIC) displays TPMS warnings and messages on the radio's display screen. See System Controls on page 218 and DIC Warnings and Messages on page 228 for additional information and details about the DIC operation and displays. If your vehicle has the Navigation system, TPMS warnings and messages are displayed on the message center screen, located inside the tachometer. See Message Center (CTS-V) on page 209 for information about the message center operation and displays. 405