2010 Mercury Grand Marquis Owner Guide 2nd Printing - Page 275
2010 Mercury Grand Marquis Manual
Page 275 highlights
Crown Victoria Severe Duty WHEELS/TIRES/BRAKES Wheel rims - police To withstand the demands placed on vehicles driven under heavy-duty service conditions, Ford Motor Company installs heavy-duty steel wheels. Tires - police Tires (including the spare) are speed-rated radials for police use. Use only the recommended tire size and speed ratings. In regions with snow and ice during the winter months, installation of snow tires may be desirable. Snow tires will usually exhibit a drop in dry pavement handling, but many show an increase in snow and ice traction. When snow tires are used, they should be installed on all four wheels, never on the drive wheels only. Tires - long term storage Most high performance tires are made with a nylon overlay. As such, the following steps should be taken to avoid flatspotting when the vehicles are not used for a period of time. • Fleets should store the vehicles with 44 psi (303 kPa) in the tires. • If the vehicle is stored for periods longer than 30 days, it should be moved several feet at least once during each 30-day period, so that a different portion of the tread contacts the ground. • Tire pressure should be reduced to the recommended pressure shown on the vehicle certification label before the vehicle is placed back into service. Training the Tire Pressure Monitoring System (TPMS) All Crown Victorias are equipped with the Tire Pressure Monitoring System (TPMS) that illuminates a low tire pressure telltale on the instrument cluster when one or more of your tires is significantly under-inflated. 275 2010 Crown Victoria (cro) Owners Guide, 2nd Printing USA (fus)