Quote:
Originally Posted by HKYStormFront
while that's probably true in most cases^ i've seen plenty that were almost un-turnable. usually on big, heavy SUV's like escalades. but that's not to say it couldn't happen on smaller cars too
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This is because the deposits heated un-equally over time, to much higher temperatures than the surrounding rotor, leading to the conversion of that part/spot on the rotor surface to cementite, a harder material, which will require physical removal or the problem will simply re-present soon as it will not wear with the rest of the rotor face.