Quote:
Originally Posted by Wmb5m
I saw something strange when I removed the wheel today. It seems that the cooling channels in the disc is very effective. You can see small dots in the dirt in the inside of the wheel. I guess that this is the air from the disc that do this pattern. Could that also also be the source of the noise? Like a round harmonica😁
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That could also explain why supposedly there is no noise with 19" wheels. More space for the air to escape silently
I hope someone will be able to verify this theory.