heres the rims you want....
16" WW wheelsThese are the right offset, and with 225/75/16LT tires they will fit perfect with no clearance issues.
I did a lot of research on fitment and load capacity and price, the falken wildpeak 225/75/16E HT is the best bang for the buck, our trailers came with D tires.
225/75/15 d x 6 = 15,240 load cap
225/75/15 e x 6 = 16,980 load cap
225/75/16e LT x 6 = 16,080 load cap
225/75/15 diameter is 28.3"
225/75/16 diameter is 29" tread width is almost identical.
So no problem with rubbing anywhere and LT tires are much better built and rated much more conservitivly than ST's, the best of the best tires are the Michelin XPS and bridgestone durvais but about 250.00 each, the falkens are about 1/2 the price and 60k warranty.