Show STUDY SUDDEN WEAR iN N TIRES Late Sunnier Collapse of Tread Is Reasoned Out Ot of the queer Quirk quirks In tire the pero per form nc that often orren seem so In- In Inexplicable In Inexplicable explicable to Mr Average A Motorist the queerest was the suddenly dis dill disappearing disappearing appearing tread When H s tire lire is II driven about 11 months without much perceptible wear war and then in tour four short weeks apparently multiplies the tread wen wea of the remainder of ot the tho year ear It I Is A phenomenon productive of ot much head a scratching most The sudden in cave was waa often attributed to spottiness with the Hie soft sott spot just lust beneath the oute outer surface ce of the tread Some tire wiseacres thought the tread rubber had just cone Ilone bad due to faulty om compounding compounding- pounding Neith Neith- Neither Neither er of or these theoretical solutions com comes 8 anywhere near the rest facts of the lh explanation Ex- Ex Experiments Ex Experiments carefully recorded over overa a period of o years earl through every month and working day of o the year nr have huo h vo clearly proved that these sudden tread freed failures are arc not duo due to any Inherent tread treed weak weak- weak weakness eak ness fleas but to an unusual combination combination tion lion of ot In the out out- out outride ride Ide life of o the tho tire Tt It has furo fur furthermore been r recorded corded 1 that these conditions aI are ara more oCt often n found In August than In any other month These outside factors Pre re 1 Excessively Cly highbe high tire tem temperature This mayor may or may not of extremely high atmos atmos- be due to I is is c temperatures the time of tread failures because then motorists motorist crowd In their most extended stop non week end trips which caused lire tire temp temperature to mount 2 Extremely abrasive r o 0 Ads Roads are not rougher In August Au- Au August Au August gust but then It If ever the mo- mo motorist motorist mo motorist travels furthest from the Im Improved highways He hunts out the coolest coolest- free dust places In Inthe inthe Inthe the gravel hinterlands And gravel of all road compositions Is moat most destructive to treads 3 Speed Normally treads wear In proportion to the speed peed at which they are arc driven wl with h great great- greater er er Increase over oer forty miles There Are no evidences of Increased Au Au- Au August Bust Au-Bust gust Speed ced drivers driver we nl- nl al always w ways ays have hl with us Th The Tha execs execs- excessive dive sive wear ear that leads lends to sudden tread treal collapse ollas Is bound to 10 be bp the th result of o the tho combination of all tre three of or these factors August Is merely the most favorably time lime or these three to b be found round together ne Because Ruse of the th intense and ex- ex extended ex tended Investigation which has hu been ben given glen this subject t of tire wear ar specially during the tho dog do doty days tires Urn aI are losing th lr tend tend- tendency tendency ency ncy for this type typo of p rapid wear ear The balloon Is now a as itch uni- uniform uni uniform form performance as tire tires of heat helL helL- type 00 |