Ford Villager Owner's Manual page 302

When replacing full size tires, never mix radial,
bias-belted, or bias-type tires. Use only the tire sizes that
are listed on the tire pressure decal. Make sure that all
tires are the same size, speed rating, and load-carrying
capacity. Use only the tire combinations recommended on
the decal. If you do not follow these precautions, your
vehicle may not drive properly and safely.
Make sure that all replacement tires are of the same size,
type, load-carrying capacity, and tread design (e.g. "All
Terrain", etc.), as originally offered by Ford.
Failure to follow these precautions may adversely affect
the handling of the vehicle and make it easier to lose
control and roll over.
Tires that are larger or smaller than your vehicle's original tires
may affect the accuracy of your speedometer and odometer.
Wheel and Tire Matching
See an authorized tire dealer for proper servicing procedures.
Wheels and tires must be properly removed, matched and
remounted to maintain the best possible ride.
Information About Tire Quality Grades
New vehicles are fitted with tires that have their Tire Quality
Grade (described below) molded into the tire's sidewall. These
Tire Quality Grades are determined by standards that the
United States Department of Transportation has set.
Maintenance and Care
RWARNING
RWARNING
RWARNING
305