you have all the mods nec. for turning the laws, if your givin' em' **** in the mud be prepared for things to break, size is kinda of a personal preferance, personally i would put the biggest tire i could fit under my quad (as long as i can turn it enough to sling mud on my old ladie) as for lawz performance on trails it would have to be bout the same as 44" boggers riding down the highway! but i would'nt tyrade mine for anything, exept maybe the 31" when they come out!!!!!!!