I thought the later 2000 VX's had the 18" rims? If so then he would be changing rims too so the stock rims wouldn't matter. By the number of his VX in 2000 that would be 18". We've had 32x11.5x17's on after market rims. We've gone up from there. The 32's were put on after a 3" suspension lift, and I believe a little bit of cutting. Our 33's had a bit more than that for cutting.