Quote:
Originally Posted by Frank G
I have read much of your writings on this forum and have the upmost respect of your knowledge. The tires on my vehicles all have a Single and Dual load rating at 80psi. Where did this divided by 1.1 come from? "official" Who is official?
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The tire in question in this thread is a passenger tire fitted to a half ton truck. The FMVSS require such tires have their maximum load capacity reduced by about 10% when used on that pick-up-truck. The procedure is to divide the load capacity by 1.1. Each cold recommendation is calculated by the vehicle manufacturer.
LT tires in a dual configuration on dually trucks have a similar reduction, hence the "single/dual" maximum pressures shown on the tires sidewalls. The reasoning there is different, road crown is one of them.