I am getting ready to order a set of ITP beadlock rims with 18" holeshot MX rear tires for my Predator and was wondering if anybody else is running 18" tires on their quad? If so did you change the gearing at all? I have an 38 tooth rear sprocket on order to help give the predator some more bottom end power, but I don't know if I'll need it w/18" tires. What do you guys think?