FORD 2003 Windstar v.1 - Manual (Page 218)

• Four tire rotation
Reset low tire warning system after rotating tires.
Replacing the tires
Replace the tires when the wear
band is visible through the tire
treads.
Reset low tire warning system after replacing tires.
When replacing full size tires, never mix radial bias-belted, or
bias-type tires. Use only the tire sizes that are listed on the
Certification Label. Make sure that all tires are the same size, speed
rating, and load-carrying capacity. If one tire needs to be replaced
sooner than the other on the same axle replace it with the same brand,
type, size, speed rating, load carrying capacity and DOT code as the
other tire. Note: tires on the same axle (front or rear) must match for
the low tire warning system to function properly. Use only the tire
combinations recommended on the label. If you do not follow these
precautions, your vehicle may not drive properly and safely.
Maintenance and Specifications
218