From the Motorcycle Superstore site:Ok gents, I give up. I've researched the rear size of 180/55/ZR17 in the "C" version and came up with no definition for the rating. I've checked the fitment guide on the Michelin website and it shows the PR2 in that size in A, B & C, all noted with the (73W). I know the B is for two up riding, but can't figure what the C rating means. Any ideas?https://www.michelinmotorcycle.com/tires/michelin-pilot-road-2#dim
"Model Specific Fitments:
180/55ZR-17 B = BMW K1200GT & R1200RT; Yamaha FJR1300
180/55ZR-17 C = Triumph Tiger 1050 (2008)"
I've never seen one, but it is the right size, yes? I'd think the difference is the tread pattern, not sure.........