I figured they'd wear more with the lead but didn't know how fast since it has brand new set on front i assumed they wear out pretty fast. I usualy have to use 4wd all the time nothing i have works in 2wd except my finishing mower then the rear tires tend to dig in and slide down hill so mine is always locked in 4wd except moving it long distances. I guess santa claus i'll have to get a big 2wd and a set of front tires for christmas /forums/images/graemlins/grin.gif