Damn...I'm glad to hear you say they KR825's aren't too small for the RD...definately plenty of tire for my 175 then. I use them back and front of course...I had a soft on the back for a while and it really took a beating..even on my 175. I'd think an RD would eat an 825 on the back pretty quick wouldn't it?
Great tire, they will do a stickey gooey side step even on a vintage bike though if you run them hard...at least on the back they will. Doesn't bother me so far...they never seem to let go, just slide a bit. I'd rather that than something that goes all at once.
I got five brandy new ones sitting in the shop right now.
JohnnyB