Yesterday was the first ride with the new Diablo Corsa's, what a difference! We logged 320 miles, most of it above 80, some above 100 and one run up to 175. I love these tires. The first thing I noticed, right out of the gate, was how much quicker I could flick the pig right to left. Then, after about 15 miles of riding I did a roll on in second gear, traction is way better, almost no (detectable) wheel spin, front end came right up. We ran up hyway 10 along side the Illinois river, my confidence level went way up in the tight twisties, the corsa's stick like glue. More then anything else, they just have a great feel to them, hard to put into words but kind of a silky feel. Running them at 40 psi, took almost no weight to (.10) to balance them, and that was most likely the wheel. Story here, you get what you pay for....this will be my tire from here on out.