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Archive for November 8th, 2006
Use of Retreads on Steering Axle
Posted by Scott on November 8, 2006
I know the Federal Regulations prohibit the use of retreads on bus steering axles; however, the Regs are silent regarding the use on any other heavy vehicle steering axle. Do you know why retreads are prohibited on busses? Further, do you know of any industry standard or best practice that prohibits the use of retreads on steering axles of Class 7 and 8 tractors? Do you recommend retreads for use on steering axles? If not, why?
It would be best if I direct you to a retread website on these issues. Go to www.retread.org/ and type the words steer tires in the search box. A booklet of articles on the subject of the use of retreads on steer axles will appear. There is no explanation of why retreads are not allowed on buses but, there is plenty of other information that may help you with your future decisions.
Flat Spots
Posted by amelia on November 8, 2006
How long would a truck have to sit for the tires to develop flat spots?
Probably everyone has experienced the "thump-thump" of tires that have "flat spotted" from the vehicle sitting for some period of time and the areas of the tires that were in contact with planet earth have taken on the flat shape of the ground below them. I don't think there is any way to predict how long this will take. The type of tire construction plays a part in this along with the temperature of the tire when the vehicle stopped as well as the temperature of the air and the pavement below the tire.