I do use a 60" blade (Kolpin Drifter poly blade front mount) on my Grizzly 700 but that is Colorado snow. Yes, it is lighter here than midwest or back east but we do get intense spring dumps where 24" - 30" + is not uncommon nearly every spring....60" would be too big unless you are using a SxS or if you plow nothing but light powder or snow of less than an inch deep.