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The Water Cooler
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Brake Job Question
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<blockquote data-quote="Cowbaby" data-source="post: 3568658" data-attributes="member: 46875"><p>Not only is it perfectly normal it means you got some rotors made out of the proper material. Rotors are supposed to be made out of a special wear resistant cast iron which will rust where the pads do not contact them. But even cast iron has better grades for rotor use and not all cast iron is created equal.</p><p></p><p>I replaced my stock front rotors on my truck at about 160k due to them getting kinda thin which can be a dangerous situation when they were that bad. I bought some of those grand Duralast supposed to be "lifetime" rotors from Autozone and they didn't last 70k before they too were worn down. I took them back but my "lifetime" warranty receipt had been printed in disappearing ink leaving me with a blank scrap of paper. How convenient huh? And of course there was no record in their computer and they would not give me a new set. NEVER AGAIN will I buy Autozone El Cheapo chinese made crap from them again.</p><p></p><p>After trying several aftermarket brands of brake parts over the years, Bendix, Raybestos, ect, I highly recommend Wagner branded brake stuff. Their Thermoquiet brake pads are nice for cars and their Severe Duty pads made for ambulances and school buses are THE BOMB for a truck if you don't mind a little black dust on your wheels. ZERO brake fade hauling heavy loads down a grade.</p><p></p><p>I got lucky and found an online seller that had one last set of Wagner brand rotors that were still made in their old plant in Canada. Had a maple leaf stamped into the casting. Been riding those bad boys ever since with about 120K so far and they are not even beginning to wear thin.</p><p></p><p>But, as for your rotors, I would assume being a BMW they gave you a quality part. If the rust bugs you your just going to have to paint them where the pads don't ride is all. Needs to be a high heat type paint but parts stores sell special paint just for rotors. JMTC.</p></blockquote><p></p>
[QUOTE="Cowbaby, post: 3568658, member: 46875"] Not only is it perfectly normal it means you got some rotors made out of the proper material. Rotors are supposed to be made out of a special wear resistant cast iron which will rust where the pads do not contact them. But even cast iron has better grades for rotor use and not all cast iron is created equal. I replaced my stock front rotors on my truck at about 160k due to them getting kinda thin which can be a dangerous situation when they were that bad. I bought some of those grand Duralast supposed to be "lifetime" rotors from Autozone and they didn't last 70k before they too were worn down. I took them back but my "lifetime" warranty receipt had been printed in disappearing ink leaving me with a blank scrap of paper. How convenient huh? And of course there was no record in their computer and they would not give me a new set. NEVER AGAIN will I buy Autozone El Cheapo chinese made crap from them again. After trying several aftermarket brands of brake parts over the years, Bendix, Raybestos, ect, I highly recommend Wagner branded brake stuff. Their Thermoquiet brake pads are nice for cars and their Severe Duty pads made for ambulances and school buses are THE BOMB for a truck if you don't mind a little black dust on your wheels. ZERO brake fade hauling heavy loads down a grade. I got lucky and found an online seller that had one last set of Wagner brand rotors that were still made in their old plant in Canada. Had a maple leaf stamped into the casting. Been riding those bad boys ever since with about 120K so far and they are not even beginning to wear thin. But, as for your rotors, I would assume being a BMW they gave you a quality part. If the rust bugs you your just going to have to paint them where the pads don't ride is all. Needs to be a high heat type paint but parts stores sell special paint just for rotors. JMTC. [/QUOTE]
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