I ordered PowerStop cross-drilled rotors though SummitRacing who got them through AutoSpecialty. Only the front rotors came and the back ones went on back order for months. I finally played detective and spoke to the relevant people involved. Their supply of cross-drilled rotors ran out, and they sold slow enough that they were not planning on making any more. At that time they had two more pair of front rotors and no rear rotors. SummitRacing offered to buy back my front ones, but I decided to try them out on my car anyway. In short, they suck! My only complaint is that they are very noisy but then I'm the only one complaining about PJ Grady's shock absorbers with the high-performance squeak. These brake rotors make a whirring noise any time the car is in motion even without touching the brake. It isn't bad enough to make me replace them, but I certainly wouldn't put the same kind of rotor on another car. Rob Grady told me that he test drove a DeLorean with cross-drilled rotors and didn't want to deal with them because of the noise issue. One important caveat: not all cross-drilled brake rotors are created equal. The PowerStop ones I got were made to be cross-drilled. After the drilling process, they were reheated and then zinc plated. The holes are chamfered (like funnels) which are supposed to cut down on the noise, but they are still very noisy. John Hervey told me that the ones he got were not cross-drilled and then he had someone do the cross-drilling expost facto. I wouldn't want to trust it, but then maybe John would like to chime in and explain what he has. I think the reason why he doesn't want to sell the fronts or rears separately is because he had them made in complete sets. If he sold just the fronts then he might have a harder time selling the rears separately. The cross-drilled rotors I like best are sold by Ed Uding. He had them on display at the Memphis show last year. This is a much thicker internally vented rotor that he then cross-drills. I don't like the idea that he cross-drills them expost facto. But I do like the idea that they are internally vented. This should stop most of the whirring noise. Can anyone who has tired them say? These rotors are too thick for stock calipers, so Ed came up with an adaptor piece that goes between the halves of the caliper making it wider. What a clever guy! Walt Yahoo! Groups Sponsor <http://rd.yahoo.com/M=251812.3170658.4537139.1261774/D=egroupweb/S=170512 6215:HM/A=1564416/R=0/*http://www.netflix.com/Default?mqso=60164797&partid =3170658> <http://us.adserver.yahoo.com/l?M=251812.3170658.4537139.1261774/D=egroupm ail/S=:HM/A=1564416/rand=387906187> To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .
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