I have 37x15.50's on my Samurai. I think they hook up great in the rocks, and the few times I had them in the snow I loved them. I like them better than my old 37" MTR's. But I just blew out my second sidewall in less than 3 months, both on relatively minor impacts. In my opinion, the radial sidewalls are seriously weak. Just bought a set of bias plys (Iroks), I'll be putting them on this week.