Thread: Best Pulley
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      02-21-2013, 11:58 PM   #119
CanAutM3
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Drives: 2015 M4 DCT
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2015 BMW M4  [4.25]
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I received my Dinan pulley today.

To my surprise, the tracks on the pulley for the two belts are of significantly different diameters. The track for the power steering and A/C belt is smaller the the one for the alternator and water pump belt.

I have the "early" kit with the single sided belt, I don't know if it has anything to do with it.

The first chance I have, I will bring it to work to get it measured. I will post back the results.