I have been running 35x12.50x20 on stock rims with an RC 2.5" level front only for about 12,000 miles now. I did some minor plastic trimming but still rub at full lock. I have had it in mud, on medium trails, and on the beach for two years. I have Firestone Destination MT's and they run pretty true to size. They look great and are definitely worth it if you go offroad even semi regularly. You gotta love to scrub though.