You guys are exactly right, it definately needed a plate to reinforce it. I felt it go on my second lap, which was after my co-drivers four laps. It felt tight, but didn't feel "better" to either of us. The rear end moves side to side just enough to rub one side when I tried the 315/30/18 Rivals on the rear. It's a little crowded on that back axle with the shocks, leafs, helpers, rear sway bar and brake lines all fighting for space. I'm not sure it's worth it to re-engineer it particularly since I'm going back to the 275 Bridgestone on the rear anyway....