Show AUTO TIRES HIT BY HIGH SPEEDS SPEED'S Shoes Shoes' Wearing Out Faster Than han Ever Before Expert Says NEW YORK UP UP Increased average average aver- aver age ge and tO top lop speeds of automobiles quicker pickups and better braking with more abrupt stops typical of today's oday's congested tr traffic tlc situation are arc wearing out tires faster than ever before be be- fore ore according to Dr R. R A. A Moyer Moer of t Iowa State college Gravel and cinder roads as well as asphalt and concrete roads with a aCine afine aine fine Cine sandpaper finish h as contrasted with road surfaces of oC coarse textured asphalt was found by Dr Moyer to present resent the thc greatest mechanical resistance re- re to skidding and therefore the hardest on tires Topography is s shown hown to play playa a big part in the wear Experts of a large tire company show showy b by y tests just completed that motorists in n cities located in hilly areas get Ret only i a fraction of the mile mileage obtained by other motorists High speeds wear tires out much faster Caster than low speeds experts of one tire ire company found At 50 miles an hour our in dry hot weather tires wear out ut just twice as fast as they would at 35 5 miles per hour Increased acceleration acceleration tion ion removes from 5 per cent to 19 per cr cent of the mileage c from tires Skidding kidding which highway reports show how to be rapidly increasing is death to o tire life liCe A foot 10 skid on a adry adry ary dry ry pavement removes many miles from rom a tire experts assert who hace discovered a foot 20 slide on a a. gritty road oad to remove two two thirds thirds of the tire tread read The effect of individual driving habits on tire wear were shown by a aest test est conducted in Boston in which the average m mileage leage before tires became bald ald was found to be miles miles' However 20 per cent of the motorists observed made less than miles and nd another 20 pcr cr cent more than miles |