Just put some 30x10x14 ITP Ultracross r spec and Methed 401 with 5+2 offset on 4 corners on a 15 1000xp4. First impression is they look cool. Took it for a quick rip for about a mile or two so far, blacktop to hard packed trail and back. In the quick rip had it up on two wheels and remember saying wow that never happened before. I don’t think I blame the wheel combo yet I might have just been getting on the right pedal at the wrong time. But then coming back out of the trail on the black top moving along on a curve doing about 65 the back end broke free and I don’t remember saying anything just smelling a little poop. I love the looks I just need to get use to them. What kind of psi should I be running on a lot of hard packed trails, sand pit and rocks?