[Civil_War_Buff]

The #1 cause of blowout is . . . OVERLOADING. If you never overload 14" tires/wheels, and keep them below 60mph you will be fine with LR C 14". That said, if you never expect to exceed 2600 ponds on any one wheel, then going to 10PR tires may give you peace of mind, but as far as I can tell does nothing for added safety of the trailer. If you never overload to 2540# then LR D will be just as roadworthy, and the rim has a safety margin as well, not to mention, the 15" LR D and Ere high speed tires and designed for 65mph (freeway speeds in many areas).

Anyhow, for me, the improvement of 15" 8PR LR D over the 14" 6PR LR C are enough of safety margin boost to give me peace of mind as I don't plan on exceeding the 1820# that the LR C tires are rated at. Each to their own, but I feel anything else is just spending money I don't have to get something I feel I don't need.