2010 Chrysler PT Cruiser Owner Manual - Page 233

232 STARTING AND OPERATING Refer to "Maintenance Schedule" for the proper mainte- TIRE PRESSURE MONITORING SYSTEM (TPMS) nance intervals. More frequent rotation is permissible if The TPMS will warn you of a low tire pressure based on desired. The reasons for any rapid or unusual wear the vehicle recommended cold placard pressure. should be corrected prior to rotation being performed. The tire pressure will vary with temperature by about The suggested rotation method is shown in the following 1 psi (7 kPa) for every 12°F (7°C). This means that when the outside temperature decreases, the tire pressure will diagram. decrease. Tire pressure should always be set based on cold inflation tire pressure. This is defined as the tire pressure after the vehicle has not been driven for at least three hours, or driven less than 1 mile (1.6 km) after a three-hour period. The cold tire inflation pressure must not exceed the maximum inflation pressure molded into the tire sidewall. Refer to "Tires - General Information" in "Starting and Operating" for information on how to properly inflate the vehicle's tires. The tire pressure will also increase as the vehicle is driven - this is normal and there should be no adjustment for this increased pressure. Tire Rotation