Bilstein Mystery

lundi 12 mai 2014

I'm posting in this thread since I have less than 10 posts and I'm restricted to creating threads only in this forum.



I recently purchased a 2011 R3 with 15,000 miles. I purchased a set of Ohlins Road and Track coilovers and had them installed this weekend, along with a new set of wheels.



I've attached a photo of the original Bilstein suspension - this is what they looked like AFTER I spent 2 hours scrubbing on them. I was planning on putting them up for sale, but I don't understand why the suspension looks the way it does. Some of the black marks are just where the paint has faded away, but there appears to be tape marks underneath a hard black material. This hard black material is also coating part of the springs.



Is this heat tape? Carbon buildup?



I don't want to sell the suspension if it's not in working order - the car drove fine before I replaced it with the Ohlins.



Can someone chime in why these look this way? Is this normal?



Thanks in advance!



Click the image to open in full size.




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