I have been running 33x12s for two years now, dont do full power reverse when youre stuck in clay. you can do it forward, but I busted mine in a full throtle reverse after a year and a half. I also hear bad things about auto locking hubs, I still have the originals in, love them, not having to get out and lock them, but again, watch the full speed front to back shift, if the wheels pins backwards, say like when one tire is in the air, it disconnects and on full power forward it'll clunk pretty good when engaging. but I wouldnt change it.