In reply to whether 33" is ok or not, I have a VX and Trooper. I am reading the trooper forums as much as this one. There are several people with larger than 33" tires on Troopers, Heck overseas there are troopers with 36", 38", and even 44" Tires. Solid front axles by the way with fender flares, body suspension lifts, 5.38:1 gears etc. but their advice is "If you dont want to risk driveline damage stay 33 and under with independent front". Its a little more trouble for the VX to get 33's due to the tighter wheel wells. The Trooper has slightly larger wheel wells than the VX for a few more options, but extreme offroad and rockcrawling will be very harsh on the driveline. 32" and under may be trouble free except really abusive situations (usually tie rods, maybe cv joints and boots) If someone goes 33" or greater you are surely needing 5.38" gears or only stay on flat land. Lots of driveline stress for sure.