I had an Avon AV55 Ultra on my front tire for almost 27K miles. Yes that is insane, but the reason is that the right side always looked good and that is the side I would see when the bike is parked in the garage. The left side as you can see has thread showing. I just replaced the tire but I believe the unusual wear is due to me storing a lot of equipment in the Right side bag and leaving the Left side empty, to store my helmet when I park the bike. I believe I must be unconsciously applying continues pressure to the left steering to compensate for the weight difference. I know if take my hands of the handlebars the bike goes to the right immediately. Am I correct or is it something else? And yes I should have changed the tire a long time ago.