Arizona republican., 1921-07-10
TIRE CARE WILL: REDUCE UPKEEP
 COSTS GREATLY
RY AL MooLook

Ask any motorist what the one big gest item in his list of motoring costs is and the chances are that he will answer: Tires" And it is undoubt- edly true. Tires are expensive in first cost. and, unless they are care fully handled, they wear prematurely, adding an extra import to their orig inal price. Most of this undue wear could be obviated if the car owner really know something about his tires and how to care for them.
 In the first place, the greatest cause of tire failure is improper in- flation. The tendency of the average motorist is to run his tires soft; he fails to initiate to the proper pressure. In these circumstances the tire flat tens out more than was intended, the side walls, the weakest part of the casing are called upon to bear more weight than they were ever intended to carry, with disastrous results. Without the due air pressure to hold the casing rigid, a sort of flexfng mo- ton Is induced by which the various layers of rubber and fabric are loose ned and the tire goes to pieces. Tire makers have in recent years concen- trated on teaching owners the danger of underinflation and they have ac- complished much, but in spite of their efforts improper imitation Is still the great cause of premature tire failure The car owner should know just what pressure is demanded by the size he is using and then possessing himself of a tire gauge, he should re- hgiously keep them at the indicated mark
 There is another way of producing just the same effect as underinflatior in spite of the fact that the tires had ny<i of a fod %a f1,e mark and that is by overlooking Suppose. for instance. that a tire has been pumped to it's proper pressure at which it is designed to carry 1.00o pounds. Instead of that load how ever, the owner proceeds to put 1, 400 pounds on the tire, which bends un- der the impost, just as if it were car rying it's normal load with underin- flation. This trouble is more com mon than might be imagined. for it occurs whenever car owner piles more passengers on board than his vehicle was intended to carry. A couple of extra passengers means an | added weight of 300 pounds of more | to the distinct injury of the tires Ii extra weight is to be carried habitu- ally. the owner should increase the pressure in his castings to care for the added impost.
  | all tires of a given size are not exact | ly the same in strength. One manu- 1 facturer may give his product extra | fabric and rubber to make the casing stronger than the normal tire Int 1 car owner gradually finds the tirt that best serves his purpose and in dividual conditions will largely rul'
 here.
 The sooner the motor car owne | learns to patronize a reputable tir, dealer. selling established brands. thu | sooner he will avoid the expensiv' mistake of investing in seconds. un l known makes and similar pitfalls. Il tire buying the best is cheapest, no Il only in the end but immediately. .l It Is a great mistake to allow cut
 in the tire tread to remain unre paired. A small tread cut may easil later on produce bad blowout. I the construction of the tire the Urea
 is intended as protector for tn , body. the fabric underneath. Whe