To reiterate the process for Original Equipment tire selection;
With numerous regulations, the DOT directs vehicle manufacturers to select tires & rims which meet the minimum requirements addressed in those regulations. For RV trailers the minimum requirement is to provide tires & rims with sufficient load capacities to support each/all of the trailers GAWRs. They are further directed to set the recommended tire pressures for those tires to insure the load capacity requirement is achieved. Once the vehicle manufacturer is satisfied that their selections meet or exceed the DOT requirements they MUST provide that information on the vehicles certification label, tire placard and in the vehicle’s owner’s manual. NHTSA and the TRA step-in and provide the supporting industry standards making the vehicle manufacturer’s certified selections the minimum standard for that particular unit.
To make that more simple to understand; Trailer owners need to select replacement tires with load capacities equal to or greater than the OE tires. That information is on your trailer’s certification label.
OOPS, now the tire industry steps-in again with their misapplication statements in their warranty packages. Some of those warranty packages will even reference information found in your trailer’s owner’s manual.
Then, guess what? The retailer doesn’t read the warranty package and/or forgot how to apply tire industry standards and replaces your OE ST tires with LT tires with much less load capacity.
It’s hard to work with all that disinformation so why don’t you just read and comply with the information found in your owner’s manual. Do you know that 90% of that tire information in your owner’s manual was directed by the DOT to be there. In fact there is a FMCSA regulation that outlines specific information that must become part of your owner’s manual.
FastEagle
It’s how things are supposed to be done. You don’t go out and go rightie-tightie on your propane lines, do you?