Just under fifteen thousand miles on my 08 and time for the forth set of tires. I got almost 6000 out of the original BT015 set,which is kind of a lot I hear, and then switched to a set of the BT016's which got me about 4000 miles(the front tire totally wore out the sides or the shoulder and died before the rear did) maybe a defective front tire????I don't know but the rear was just about ready to be changed again too so then I went to a set of the BT016 Pro's and got a little less than 4000 out of them but at least they both wore evenly. I'm not complaining about mileage or anything. I don't do any burnouts or a lot of wheelies but I do love the corners so corner grip is probably the most important to me. I'm sure there are all kinds of opinions out there of what is good and what is better but I decided to again stay with the Bridgestone tires and try the relatively new S20. I almost went with another set of the 016 pro's which I can almost always find a deal on somewhere but the S20's offer a 200/50/ZR17 rear tire size option so I'm gonna go with that rear with the stock size front and they were only about 20 bucks more than the 016 pro's. Anybody else trying the newer S20's yet. Are they much different than the 016's or 016 pro. Bridgestones site says there have better grip in the wet but I try not to ride in the wet so that doesn't matter much to me but.....just wondering if anyone is riding on a set of them and how they compare to the 016's and 016 pro's when you have the bike at full lean.