When i bought mine in early 2015, the steelership told me that the Y.E.S. would be voided if i brought my grizz in with tires bigger than stock, any kind of lift kit, any kind of snorkel kit, any mods to the clutches. basically i could add lights as i pleased and get aftermarket wheels and tires but of the same size of factory tires, and mods to the plastics like fender flairs are ok as well.
BUT....
the steelership i bought my grizz from and was dealing with are a bunch of morons so after trying to take it in 2 times i never brought her back, when something has come up i check it out first my self (im a mechanic by trade) then turn to grizzly central and thats all ive ever needed. but at the same time i know there has been a lot of issues with the newer grizzlies so it might be more worth it for you to keep it. worst case if you do mod the wheels and tires or a spring and shims on the clutch... make sure to put every thing back to factory stock before taking her in for warranty
hope it all works out well for you
BUT....
the steelership i bought my grizz from and was dealing with are a bunch of morons so after trying to take it in 2 times i never brought her back, when something has come up i check it out first my self (im a mechanic by trade) then turn to grizzly central and thats all ive ever needed. but at the same time i know there has been a lot of issues with the newer grizzlies so it might be more worth it for you to keep it. worst case if you do mod the wheels and tires or a spring and shims on the clutch... make sure to put every thing back to factory stock before taking her in for warranty
hope it all works out well for you