PIRELLI SCORPION SYNC!!!!!
In regards to the Pirelli Scorpion Sync tire... VERY AWESOME TIRE, for my style of riding. I come from a motocross racing background and I ride my XB9SX VERY aggressively... VERY as in sheared the rubber teeth off a "lifetime" drive belt after 10k miles...
The Pirelli Scorpion Sync tires came stock on the bike and I got 7k out of them with just a little tread left on the rear, the HD shop then put me on a set of Diablo's which lasted right at 3k before i had steel wire showing through the entire rear tire! Now I am back on the Pirelli Scorpion Sync and will never stray again...
From my experience and in my personal opinion, the Pirelli Scorpion Sync is the best tire out there for aggressive street riding! Both aesthetically and in quality.