I also have splurged for a new set. I have to say that balancing the tires, I was told that my rim(s) 1 or 2 were close to warped. Possible, not sure. Anyway performance is fenominal compared to the Diamaris. Much quieter, better looking, corners better with confidence, brakes better with less road noise. I turned off the traction control and hit a corner hard and floored it, no squeeling just a gripping noise. Coooool!!! I also love the tires.