I put 30” zillas on my 2015 700 grizzly and it has the expected loss of power on the bottom end.I have ordered up the shims and the white spring for the secondary clutch but i dont know what weights i need to switch to.Im not into big mud ridding.the big tires are more for clearance than anything else.I dont drive over 60 kms per hour so speed doesent mean much to me.I just want them to pickup better on takeoff.Anybody else doing something similar out there.