I was thinking of replacing my stock 16's P rated tires with LT's and just storing the P's in the garage for use later. I wanted to put LT rated tire of a similar profile so as not to change the gearing. I like the looks and price of the AR-767 but am not sure if I should be worried about the strength of the wheel while pulling 5000# 5th wheel. Does anyone know whether they will handle 50psi tires? Thanks.