Maybe unrelated, but I do track days on my 2013 ZX-6R and recently tried out a set of those Dunlop slicks takeoffs in good condition, in the 200 width. Honestly, even though the sidewall says it fits 5.5"-6.0" width rims (ours are 5.5 as you probably know), my main concern was with how extremely close the left edge of the rear tire was to the chain. I've done two track days with them with no incident so far and I keep my chain just barely lubricated ("just right"), but the next go around, I'm going 190 max. Also felt I had to wrestle the bike alot more in transitions. My 2 cents.