1996 Ford Aerostar Owner's Manual - Page 273

RWARNING Driving too fast for conditions creates the possibility of loss of vehicle control. Driving at very high speeds for extended periods of time may result in damage to vehicle components. At least once a month, check the pressure in all your vehicle's tires, including the spare. 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 3 miles (5 km). You can find proper cold pressure and load limits of recommended size tires on the Safety Compliance Certification Label. RWARNING Improperly inflated tires can affect vehicle handling and can fail suddenly, possibly resulting in loss of vehicle control. Tire Inspection and Maintenance Inspect the tire treads, and remove stones, nails, glass or other objects that may be wedged in the tread grooves. Check for holes or cuts that may permit air to leak from the tire, and make the necessary repairs. Inspect the tire side walls for cuts, bruises and other damage. If you suspect internal damage to the tire, have it demounted and checked. You may need to repair or replace it. 295