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      10-12-2018, 04:31 PM   #33
tracer bullet
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Drives: '11 135i , '15 X3 35i
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Quote:
Originally Posted by TEF View Post
is just a machined steel disk.
Machined cast iron disk. Exact ratios, impurities, casting method (lots of different ways to do this), etc. of the iron can all play a factor. As well as any internal ventilation designs, etc.

That said, I agree with you, they are all certainly damned similar and often you are just paying extra for a name.

Last edited by tracer bullet; 10-12-2018 at 04:50 PM..
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