The new 30 x 4.50 tire with which the Model A car is equipped at the factory is built to definite specifications provided by the Ford Motor Company, after months of research and experiment. As a result the owner of a Model A is given exceptional tire value.

Because of the high speed and quick acceleration and efficient brakes of the Model A car, it is necessary to use a tire of unusual quality and construction. Tires which have been approved are made of special heavy ply fabric, with a large volume of tread and a sidewall rubber. They are of sturdy non-skid design, reinforced with gum plies to strengthen against bruise breaks, and are manufactured in such a manner as to provide the best balanced units, which is very essentially in the operation of a car having the performance of the Model A.

These tires are of uniform balanced construction with provision made for location of the valve stem when the tube is inserted in the casing. This stem location is indicated by a red mark on the side of the tire. To insure proper balance, it is important, therefore, when inserting the tube in the tire to place the valve at the point designated by the red mark.

As the tires and tubes with which the Model A car is equipped at the factory are built to Ford specifications, we recommend that only the makes which are furnished as original equipment on the cars, be used as spares or as replacements.

To meet all conditions and insure proper performance and satisfactory tire service, these tires are built to carry a minimum pressure of 35 pounds. This pressure must be maintained. Tire pressure should be checked closely upon the delivery of each new car, and the owner instructed as to the importance of proper tire inflation.