I just wanted to put out a feeler to see if anyone has some experience with these. I've always had good luck with standard Brembo brake rotors on my 240s. But during my last major brake service(almost 2yrs ago)I had to use some inexpensive Chinese made rotors because the Brembos weren't locally available at the time. Needless to say, my cheap rotors are now mildly warped and will require replacement much sooner than expected. I see that www.newandusedvolvoparts.com has Zimmerman cross-drilled rotors at a reasoanble price. Can avyone give some insight to their performance and longevity?