Word of warning to anyone thinking of using 10" Dunlops over 7.9" Hondas... they don't fit!
Well of Dunlop wheel is way too wide, Cosmics are probably in the same boat....!
Another problem with the 7.9" Hondas- (yeah I know, I started this Honda ball rolling) is the inner pad wears with a step in it because it overhangs inner edge of disc surface. I found this out when I swapped the Hondas off Barney yesterday.
I guess you could grind the pad to remove this overhang.. but it looks dodgy.
Soooo, if you gotta have Honda discs on a Mini, I recommend fit 12" wheels and run the discs at stock diameter- 9.1".
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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.