Great information! FWIW I have had mostly cruiser style bikes (Softails, Sportys, Vulcans, and a Shadow) never a bagger...had a Harley trike for awhile...but that was a mistake! I do mostly one up riding, mainly flat, some curves, rural, highways mostly in a year round environment (thankfully) in Southeastern NC. I think the only tire manufacture, (at least 12-14 sets, always both front and rear at the same time and with a matched set) I have not tried is Pirelli, always motorcycle tires, and never a car tire. I'm not a hotrodder, no wheelies, or burnouts, downshift when braking, always check pressure (38-40lbs) in other words pretty conservative. Eight thousand miles is the most I have ever obtained, and that was on a lighter weight Kawasaki 900 Vulcan. All I can say is "I wish there was a 15K tire for me"