Checking The Tyre Pressure; Tire Rotation - Ford 2000 Crown Victoria Owner's Manual

Maintenance and care
SERVICING YOUR TIRES
Checking the tire pressure
Use an accurate tire pressure gauge.
Check the tire pressure when tires are cold, after the vehicle has been
parked for at least one hour or has been driven less than 5 km (3
miles).
Adjust tire pressure to recommended specifications found on the Tire
Pressure label.
Improperly inflated tires can affect vehicle handling and can fail
suddenly, possibly resulting in loss of vehicle control.

Tire rotation

Because your vehicle's tires perform different jobs, they often wear
differently. To make sure your tires wear evenly and last longer, rotate
them as indicated in the Scheduled Maintenance Guide. If you notice
that the tires wear unevenly, have them checked.
Four tire rotation (for vehicles
with aluminum wheels)
176