So I live in Olympia, WA and its a little journey to the nearest Duc shop, but my two awesome friends got me a new rear tire for my wedding present in July... They both ride Hondas, and naturally they took it to the Honda shop in Oly for a new tire. After I broke the new tire in (to the very edge) I was inspecting my lack of a "chicken strip" after a nice hard and curvy ride and noticed a strange pattern taken out of the side of my new tire where it comes to the point. I wasn't sure what was going on until I was inspecting it closely then noticed that the chain was actually making contact with my tire (or would if even the slightest sideplay occurred). I took it into the Honda shop and he showed me some forums of guys with the same problems... But I didn't have any issues on my old 180 tire. So eventually he convinced me that it was just the wrong size which technically it is) and it would be fine. Not satisfied though, I went home and was frustrated for a few days, then had a revelation to see if I could find a way to adjust my front sprocket to move the chain out... Well I just flipped the front sprocket and it have me just a few more mm, but it was plenty, and I've got all the clearance in the world... The chain is still aligned well and isn't wearing in any strange way. They insist that they didn't remove my front sprocket at Honda, which I believe as it would be strange if they did, so how did my old Bridgestone (I think???!) 180 fit before and now I needed to flip the sprocket for the new Michelin Pilot 180 to fit now? I believe both tires have actual measurements of 183 mm or something... Anyway, any input?