Thanks. I am running 255.70.16 The homemade bracket only had 2 bolts when I got it. The tire realy shook when driving. I added a third bolt to the upper bole hole and the brace down to the frame.No shakes but I thinkk that much weight is causing the sag.I put two bags of sacreet in the right rear of the bed and that has evened it up. probably not the best fix.