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Show TREAD D E SIGN ( Non-skid on Rear Wheels and . Ribbed on Front Is Helpful The tread design on an automobllo tire may be a matter of small consequence conse-quence to the driver of a small car, but every dViver of a heavy car know-3 that tho tread configuration has a good deal to do with the ease with which the car may be steered. On the smaller cars tlie area of tho tread that is In contact with the road surface Is so small that an improper design may never cause him trouble. Its tires, the driver finds himself called on for the exercise that is constant con-stant attention and effort to keep tho car from swerving off the road, if the tread design is of Improper 'typo. One point on which all motorists agree Is that the tires on the rear wheels should be of a good non-skid pattern and that the front tiros should havo a tread design that will keep them running in a straight line with a minimum steering effort on the part of the driver. The ideal lire tread Is one that can be used with equally good results on any wheel, either front or back. Given such a tire a motorist need carry only one spare, and his car is always evenly even-ly balanced no matter what tiro changes he makes. But if one style tread Is used on the front whcel3 and another on the rear, the motorist will usually carry two spares, one of each type. Having two types furnishes a further complication when it is desired de-sired to shift partly worn tires from the hard-working rear wheels lo the front wheels in order to got a few thousand miles more wear out of i them before they go to the scrap ' heap. Tho non-skids used on tho rear may not be suited for front wheel purposes. oo i |