OCR Text |
Show HOW BRAKES OFTEN CAUSE TIRE TROUBLE Sudden braking is harmful to tires. It causes tho wheels to be dragged over tho ground, with tho result that tho tiro treads are quickly worn away. Occasionally motorists apply their brakes so forcibly that tho wheels are locked. Not only Is this absolutely ruinous to onvolopes, but according It Is not generally tho quickest way to stop a car A demonstration demon-stration of the same principle Is often seen Instartlng a railroad train. If tho throttle is opened suddenly the wheels of tho locomotive will spin around without grippln;, the rails and tho train elands st'll, whereas If tho steam be applied slowly the cars are set in motion at once. Moreover. If the brakes act with unequal force, tire trouble i6 likely to reBiilL One of the wheels will probably run free, while tho other Is checked suddenly The tiro on tho lattor wheel wll soon show signs or ear. If the springs are weak, bad jars will cause the upper part of the tires In rtfb against the mudguards In chain-driven cars the driving-chains often cause Injury of a somowhat similar nature. If they arc slack, a swinging motion will cause them to strike tho sides of the tiros. If the chain line Is too close to tho wheels or If the chain bolts arc too long the envelope will be marked with oblique ob-lique scratches. These cuts are produced first when the bolts strike the upper and again when they strike the lower part of the tiro walls. All these matters require tho motorist'3 carefu attention. |