Just mounted my 225/55ZR/16 Riken Raptor today and I am pretty impressed with it so far (did about 60 miles today). The streets in this town are pretty crappy, lots of ruts, grooves and crowns and it does throw the bike around a bit but it is not as bad as I expected. Cornering is still good, which was my main concern since I like to ride fairly hard. With the wider bars I installed and the fact that I already have Popeye's forearms the extra effort to turn it is no big deal.