I eat my R6
Join Date: Dec 2014
Location: Southwest Ohio
Bike: 2008 Yamaha YZF-R6s Stock
Re: Difference between 120/60-17 and 120/70-27
Interesting. I'm on stock tire size setup. Baring adverse condition such as sand at an intersection, I've only detected rear tire slip for max-grip lean. When I look at front versus rear, the front seems to have considerable more wrap. (side tread) Don't imagine there being the possibility of having too much grip on the front, but it seems the principal behind current design choice is sufficient.
Based on comments, it's just the improved feel, possible responsiveness, that may make the larger sidewall preferable. It may be that one is able to maintain that better feel you get with a fresh set of V-shaped tires, longer, on the larger sidewall. Center tread wears and tires get the U or ╰╯ shape, requiring more lean-in, resulting with lower peak cornering speeds, less responsiveness.
Last edited by Intuit; 09-22-2019 at 09:44 AM.