Show SOFT TIRES ARE ABE VERY EXPENSIVE EXPECTS proper inflation will give more miles and decrease gasoline consumption bv ERWIN GREER Preil dent greer college of 0 automotive engineering chicago tires form a very important part ot of an automobile this point being brought to our realization when on a beautiful day adny for motoring motor ipg we spend an hour or so struggling on a hot road rectify ing the wrongs of a sadly neglected or badly used tire involving the loss of a perfectly good temper dont drive your car with tires I 1 that hat are soft or not properly inflated or you will be well started on the road to tire trouble with the following results to your tires and your pocketbook sliding of the tires on the rim when the brakes are applied su suddenly denly causing the tube to tear around the valve steni stem trend tread loosening from the fabric due to are arc of bend in transverse direction to are arc of circumference tires puncture much easier when not properly inflated tire heating which destroys ohp t valuable chemical elements necessary to both rubber and fabric cracking of the side walls and rim cutting and in some cases pinching of the tube when tires are not properly inflated they create a drag and the car Is slow to pick up speed or it if on the front wheels steering is made harder the engine has to work much harder gasoline consumption Is greater and many other effects make themselves known turns out of course did you ever drive your car along a smooth road with one of the front tires soft you noticed the car had a tendency to turn oft off its course in the direction of the side on which the soft tire was the cause of that Is this when a tire becomes soft it decreases the tha overall diameter of the wheel that Is it if the tire becomes soft enough to allow the axle to settle one fourth inch on one side you yon have in reality a wheel that Is one half inch smaller than the wheel on the opposite end of the axle therefore the smaller wheel must travel faster or a greater number of revolutions to travel the same distance as the other or leave its true course of direction lon tile other wheel with the tire properly inflated on the other end of the axle being larger travels a greater distance in the same number ot of revolutions lut ions and it not joined to the car it would follow the smaller wheel off its true course and gradually turn in a circle around the smaller wheel using the latter for an axis around which to rotate But both loth wheels being firmly fastened to the car they are forced to travel in the true course of the car thus the smaller wheel or tile the one with niall the soft tire Is forced to travel the same distance as the larger one thus causing more wear on both keep well inflated so keep your tires well inflated but not over inflated as one Is as bad as the other be sure to leep them inflated to the pressure that Is specified on the side of the tire by the lie manufacturer fac and you will get more mileage and decrease gasoline consumption and have a smooth running cur car with less trouble on tile the road |