OCR Text |
Show I USE ROADS I IKE MS HOT Tests Serve as Warning to those Guilty of Overloading, Under-inflation Here arc some sermon facts for drivers who arc careless of the results of over-looking automobiles or ii icka and ur.dor-lnf lntlon of Urea An average slbcd tiro under proper inflation and normal load roaches a temperature rf 140 degrees l Just under the tread, when run at a speed of 2D miles per hour. On Increasing thla speed to 3f miles per hour, the driver raise this tempi nature to 1 S " dcKrees Now, if this Sfl.me tire La overloaded hy fifty per cent, the temperature will reach 160 degrees at a 25 mile speed. And it will go to 1 3 ri degrees miles per hour Moreover, If this same tire is run under-Inflated, at 25 miles per hour the temperature is ISO degrr-. s ami 35 miles per hour It will rise to 220 degrees. Both under-inflated ami oirrylng a ?0 percent overload. It will tak- only 30 minutes for the same tire to real h a temperature- nf 250 degrees when running at 45 mile. an hcu-In hcu-In 6olld tires. ov crln.idlnK and Increasing In-creasing speed has the sains effort .is noted SbOVS for pneumatic tires V temperature as high as SSa depress haa been measured In a solid ilri under un-der adverse conditions The tests under which these tempe ratures r-atures wero disclosed were conducted by chemical laboratory staff men of the Firestone Tire &- Rubber Co, Tires of numerous makes were used 1 |