I got these last summer and got them installed on my 2003 Wing. It has 25K miles on it. Of course the Wing is extremely smooth and frankly I didn't notice any additional 'smoothness'...But...when I went to apply the brakes..WOW...Unbelievable unexpected benefit...the bike stops like on rails and with much shorter distances also. It feels 'straight' and I guess the discs makes the tires to have constant contact with the road surface giving me the unexpected benefit, and safety, of shorter braking distances. Plus I now never worry about my tires going "out of balance". Why aren't these things OEM on Wings? How about my Corolla (winter use)??