Show OPENING HER UP COSTS REAL MONEY IN RISK AND TIRES Speeding Quickly Burns U Up P Tires and ana Is Ex Expensive 1 Indulgence The rhe automobile speeder sows more sc seeds d besides those of or possible blo disaster ter t r when he ho Lets her out He Is also 10 speeding up uP his tiro Uro expenditures for Jor fast drivIng is destructive to any casing according to tho the B B. B F. F Goodrich Good- Good rich Rubber company If 1 the speed mania Is Ig so BO strongly entrenched that the tWe victim cannot de- de Mst first from rom the dangerous sport ho he Should obey two rules If It ho would avoid av i tho prodigal al purchase of ot tires dumber one Is to ride slowly over OUCh Augh roads and take turns cautiously umber Number two Is to increase So the tho pressure pres pros sure aure uro in his tires from two to to six a Is pounds above normal Specially built bunt tires such as used by racing drivers arc are required for tor forr mr ceding Breeding r eding The reason for this is oby ob- ob ious v y ous us Tho The faster a tire Ure is la driven themore the tho meTre more heat It generates Internal Internally formal l speed will not raise the temperature temperature tem tem- of ot rubber to a dangerous point L Some motorists drive at the same sarno speed ced over a Do rough road that they doh do I IO O ocer r a a. boulevard and then wonder Why It is that their tires Ures wear away Iway so rapidly I Watch etch tho the speeder negotiate a a. rough road just about as fast as his car cu- can travel ti and notice tho the rear wheels as they strike an obstacle The rhe shock comes so abruptly and ond so forcibly that they are arc usually raised off ort the tho ground Perhaps only an Inch or eo so but durr dur- dur r g that fraction of ot a second when Tie lie wheels aro arc off oft tho the ground the tens ten- ten s on jl is released on the tho engine and the eels spin much faster r. r Consequently when they strike tho the road aid G d. d the ground Itself must do some some break braak work having the same Bame effect on the UIA tiro tread as that of ot a rasp being run over Its surface I An average speed of ot twenty-five twenty miles mUes per hour gets tho the most mileage out of ot the tire n |