How will 20 percent overinflation in a steel radial truck tire affect the tires performance?
A. It depends on how the tire is used and the surface it is used on. If the tire runs on a smooth surface, it will likely develop some irregular wear. If it runs on gravel or travels over rough surfaces, the tire will likely experience severe cutting, chipping and other impact damage. Wet gravel makes the cutting and chipping worse. We recommend using only the inflated pressure required for the speed and load. Q. I understand that the maximum allowable injury for a nail hole repair in a large radial truck tire is 3/8″(10mm), but I don’t understand why a 3/8″(10mm) injury in the sidewall requires a more costly section repair. Please explain. A. The tread area of a medium radial truck tire features four to five layers of steel cord-three to four belt plies and one body ply-while the sidewall has only one steel body ply. Given those features, the tread area is heavily reinforced so that the repair unit for a 3/8″(10mm) puncture really only has to seal the injury. The sidewall offers much
