Just spent three weeks on vacation in Mexico and with no TV and the spring weather at home got me planning on my truck. It's at the upfitter getting the roof rack and solar panel rack installed. I'm basically at the point that with my 550 build I stay with stock 19.5's in a 245 70 19.5 or go to 335 80R20 MPT 81. I'm basically at the point that 1st attack are my option for the MPT's. I briefly chatted with western Canadian Rockwell about using 20" military wheels. This is a surplus wheel they sell that the turn the center ring around or front and back tracking. I found 4 of these wheels on Kijiji cheap! THis is the link from the WCC site to this wheel. Anybody have any knowledge?