Had Warping Problem Too
From Anonymous of Columbia, Maryland on 8/7/2012.
I caution getting these for anything other than lightweight daily driving. Unless I have another issue, these rotors have warped on me twice. The first time at a HPDE track session, the second time under spirited daily driving (I have someone that will machine this type of rotor).
From 007M3 of Melbourne, Florida on 6/24/2011.
Casted not drilled. Most in this price range are blanks post drilled= much weaker.A little more bite, but really noticeable when they are hot, no fade. Havent tracked with them yet but getting down from 100+ to 40 gives no fade.Highly recommended, Cheapest price i could find.
From Dave Ronyak of Akron, Ohio on 9/17/2009.
I would buy this product again. I ran a set of these front rotors (with brake cooling ducts) together stock OEM BMW rear rotors with Hawk HP Plus pads all around for several driver's schools including Mid-Ohio and VIR with no problems, although they appeared to be approaching their limit at VIR where braking with my car can begin from about 130 MPH with my car (E36 M3). These rotors ran significantly longer without warping than the DBA front rotors that I tried after the Zimmerman Cross-Drilled. By the third 2-day school at Mid-Ohio, the DBA rotors were causing such severe steering shimmy and wheel hop that my instructor advised that we withdraw.
A1 Quality part
From hachey jean-francois of shipshaw, Quebec on 4/18/2008.
Very good quality of finish part, Very good performance for Best price... This is not E-bay Cheap part. Same or Higher of OEM.
Warp and Rust
From Nick Ehret of Louisville, Kentucky on 9/19/2006.
They may seem like a great deal, but you get what you pay for. The first problem I noticed was rust. After about a month, any part of the rotor not kept clean by contact with the pads was bright orange with rust, and my car is garage kept and not driven in the rain. The second and far more severe problem is warp. After about 5 months of use, the warping was so severe that the car shook as if I were driving on rumble strips even under light braking. I would strongly recommend you stay away from this product.
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