Quote:
Originally Posted by DgjoX6M2016
I am sure there is a lot of engineering work and complex calculations going on here...
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i read that as calculations and financial engineering. i believe it is to save cost on something that is most likely not needed to begin with and is an aesthetic improvement for majority of the people who drive these vehicles. i would love a proper four pot set up in the rear but the vehicle brakes just fine without issue as is because even the $14k ccb upgrade (p/n: 34112317804) has the larger caliper and the rear still utilizes the single piston. the nice thing about the ccb kit is not only does it save you about 50lbs in unsprung weight but it also lightens your wallet.
if i recall correctly there is a guy over on the x5 forum who took the fronts from E70 X5M and installed them in the rear.