The jury is still out. I have plenty of room height wise using stock 5 leaf springs. There is plenty of room to go wider on the inside, the wheels I have are 285's on 10" wheels with 6.5 backset and are out almost to the edge of the quarters. I'm not sure if going wider is the answer as they'd be close to sticking out. The fronts are perfect. If I can lower the rear some, and trim the 1/4 lip which is pretty wide, I think I'll like it a little more.