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      09-28-2016, 07:16 PM   #21
The H is Silent
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Drives: 14 AW M235i
Join Date: Aug 2016
Location: SF Bay Area

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Quote:
Originally Posted by M3 Adjuster View Post
I almost came out of my chair when I saw the calipers weigh MORE! Glad I kept reading to see that discs provide weight savings for the combo. Thanks for taking the time to make these measurements..

8 lbs per corner is a decent amount of unsprung weight... but I still cant imagine that this really is a justifiable upgrade for anything more than the bling factor.. the calipers and rotors must have cost $7-10K... ?

The gold calipers look great on MG and would look great on BSM. Not sure they would work so well on AW or LBB
I was surprised as well about the calipers until I remembered that the CCB calipers are 6 piston front and 4 piston rear, so it's not just that gold paint is heavier

I think that you're getting 8 lbs or so of savings per corner in rotating mass, but the unsprung savings is roughly 3 lbs in each front corner and 6 in the rear. Not that it matters a whole lot as both are somewhat small savings. For kicks, I did some calculations based on the weights shared:

Unsprung Savings (kg) Rotating Savings (kg)
Front Corner 1.31 3.96
Front Total 2.62 7.92
Rear Corner 2.82 3.53
Rear Total 5.64 7.06
Total 8.26 14.98
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