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      02-21-2014, 04:07 PM   #60
Drives: 2012 e92 M3
Join Date: Dec 2013
Location: Raleigh

Posts: 56
iTrader: (0)

I just picked up ST40's for both front and rear and I can't help but notice the front rotors of the ST40 kit look smaller than then OEM's..
I haven't installed yet, or looked up the spec but just from initial looks I would think the OEM should/could perform better based on more surface area?
The contact area of the st40 seems really thin.
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