Will 27" Titan 589's fit on a stock grizz witout lift? Would 26"s be more efficient? Also what kind of stability gains will I see with new tires? Thanks

 

I have 28" outlaws on my grizzly

fit fine without a lift........but I wouldn't recomend carying much weight with the 28 laws

28 589s clear perfectly with no lift.......my brother is running that setup.....

 

They will fit fine. You won't see any real stability gain unless you go with an aftermarket rim (which I believe every one of them have more offset than factory). With stock rims, all you would get would be maybe some extra width with 12" wide rear tires, and that wouldn't be enough to offset the fact that your quad is now higher off the ground. Aftermarket rims do wonders to the stability of a Grizzly.

 

I have 27" ITP 589's with the ITP wheels on mine with no clearance problems. Check out my pictures...