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No difference (?) (archive)

[ Follow Ups ] [ 7-series (E32) Message Board ] [ Msg. Board FAQ ]

Posted by Kevin on October 15, 2001 at 09:25:36:

In Reply to: Are Bendix rotors same as ATE's? posted by Richard V on October 14, 2001 at 13:14:59:

Perhaps other's can comment...

When I had a late 80's 5 series car I had lots of trouble with the front rotors warping. The problem was that one section of the rotor profile, as specified by BMW, was too thin and warped when it got hot. The official fix was to use soft organic pads that made a huge amount of dust and only lasted about 25,000 miles. The result of numerous inquiries about whether different brake rotor makers might manufature rotors that did not have this "defect" (as I saw it)was that no mass produced rotors were any different than the BMW specification. There was just too much liability for any aftermarket manufacturer to try to improve the design and, since it was not a 'safety' issue, BMW was not of a mind to make any changes.

This indicates to me that the only difference between one brand of rotor and another is the brand, and perhaps some deviation in the actual steel used (although this is part of the spec so I can't imagine too much variation). I've found that price is not a factor. Cheap rotors seem to perform and last as well as expensive ones and expensive ones have warped on me with as little as 2k miles on them. I believe there is little room for any rotor manufacturer to innovate... they are all virtually the same.

Kevin


Any thoughts on the use of Bedix rotors verses BMW or ATE?





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