Bighorn Maxxis.
now the bigs are heavier than stock but one of the lighest tire of its kind too although you have to clutch to get the pow back too... which of course i have done.. there is a big difference ...don't fool
yourself... its all about getting the pow your engine has to the ground effectively.
Just to clarify, I run my 30" Zilla's on bead lock rims with 4 psi pressure. I get max foot print on the ground and awesome traction. I run with the stock clutch and always use low range when approaching a mud hole. I also have a 3" lift kit. I'm always on the other side of a mud hole or skeg waiting for my quad buds. This combination however is not good for fast travel. Those big tires with little air in them are awesome for mudding and skegging but if your wanting to race your buds don't go this route. I don't really see the need to clutch it either.