i have a 1000 ninja which i have placed my 450r rear end under, i would like to know what the guys who have fast drag quads use for rear tires on hard packed dirt, i have a set of stock 450 rear tires with 3/16 carriage bolts for studs, it spins alot, and i see other guys just run 4snow tires and they do decent , mainly i would like to see what worked for other guys wiht higher horsepower quads before i sink more money in to it, thanks jeff