Time has come to replace stock tires on this 2011 ultra limited with 13500 miles. Always liked Dunlops , but I think I'm gonna give Michelin Commander II' s a try. After inspecting my tires coming off a 225 mile trip with 25 others following me running hard with a few drops of rain coming down this is what I found. Measurement showed 1/22 of an inch rear tire and 1/20 off an inch on front tire with a small crack line going side to side,picture will show more. I have gone far enough on these tires.