with the wider rims, you can still only go 90/80 in the front, unless you change your tree that attaches the fork to the bike to be wider. on the back i believe the widest you can go is 130 for the 2.5 rim. and that may not fit into the stock fender. if you want to keep stock fender then just stick to 110. ok bro
don't forget, bigger tires, and rims may cause your bike to loss top speed, so you may also want to look for a better sprocket and chain combo.