Hi guys, no need to get upset here...... I've mentioned this before, and I can send pic's - You can run 245's on the 7.5 inch rim. That's the legal max for a 7.5 inch rim. I'm running 245/45 x 17's without a problem on a 7.5 inch rim, and I agree with the above post stateing that you can run 255's with a slight "massage-ing" of the rear inner fenders.... There is lot's of room on the front for 255's. I mounted a set on the front with no problems, however the back was just a hair to close for me. I wasn't keen on trying to massage the rear fenders.. So I went back to the 245's all the way around. Just my 7 cents worth....