Well, I learned a valuable lesson in MOAB last week. 33s require more metal trimming (w/ a 3" SL) than I'd once thought. After making my way down a stretch of road at maybe 40 mph, I hit the third of three whoop-de-doos and had to stop to see what the noise I'd just heard was. The tires had folded back the metal to where it wanted it , and so the next morning, I headed to MOAB Outpost 4x4 and had some trimming done. (They were also great about getting all the welding I needed done too. I logged 3 hours total) The crunching had also sheared the brackets which hold the fenders to the body, so he fabbed new ones and welded those on too.