2004 Lincoln Aviator Owner's Manual - Page 319

Maintenance and Specifications Changing tires with TPMS It is recommended that you always have your tires serviced by a dealer or qualified technician. Each road tire is equipped with a tire pressure sensor mounted on the wheel inside the tire connected to the valve stem. The tire pressure sensor must be unbolted from the wheel prior to tire removal. The sensor can be removed by loosening the nut at the valve stem. Failure to remove the sensor may damage it. The rubber grommet (washer) between the wheel and the tire pressure sensor needs to be replaced when any tire is changed to minimize air leaks. The tire pressure should be checked periodically (at least monthly) using a tire gauge, refer to Tire inflation pressure in this chapter. INFORMATION CONTAINED ON THE TIRE SIDEWALL Federal law requires tire manufacturers to place standardized information on the sidewall of all tires. This information identifies and describes the fundamental characteristics of the tire and also provides a U.S. DOT Tire Identification Number for safety standard certification and in case of a recall. Information on "P" type tires P215/65R15 95H is an example of a tire size, load index and speed rating. The definitions of these items are listed below. (Note that the tire size, load index and speed rating for your vehicle may be different than this example.) 1. P: Indicates a tire, designated by the Tire and Rim Association (T&RA), that may be used for service on cars, SUVs, minivans and light trucks. Note: If your tire size does not begin with a letter this may mean it is designated by either ETRTO (European Tire and Rim Technical Organization) or JATMA (Japan Tire Manufacturing Association). 319 2004 Aviator f/k/a Navigator LS (231) Owners Guide (post-2002-fmt) USA English (fus)