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  #1  
Old 03-24-2020, 08:53 PM
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E70 M calipers on the E53

Howdy yall!

I didnt know if anyone over in this forum section might know the answer I am trying to find.

I found the amazing thread linked below, of how to raid E70 and F85 brake components onto the E53 and its something I am actively looking to do.

https://xoutpost.com/bmw-sav-forums/...o-upgrade.html


What is NOT answered though is the rear calipers. I have searched and reached out to the author of the thread, but he hasnt been on in over 6 months, and the questions about the rears haven't been answered.

I am coming from a E53 4.4, so know that the E53 4.6/8is rears are better and can upgrade there. That said, the E70 M rears are MASSIVE (almost the size of the fronts in rotor) but a single piston as well.

Does anyone know if the E70 M rears will work for an E53 like the fronts will? (with the appropriate rotors of course)

Thanks!
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  #2  
Old 03-24-2020, 09:53 PM
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The one step further crazy idea is if the F85 front calipers would fit! 6 pot instead of 4 which would be amazing.

Since the front rotors are the same size on the E70 M and F85, one would assume the caliper would fit the rotor the same, but question would be if it fits the knuckle on the hub.

E70 M
Front rotors: 395 x 36
Front Calipers: 34117847241/2 (4 piston)
Rear rotors: 385 x 24
Rear Calipers: (matches F85) single piston

F85 M
Front rotors: 395 x 36
Front Calipers: 34117852967/8 (6 piston)
Rear rotors: 385 x 24
Rear Calipers: (matches F70 M) single piston
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  #3  
Old 03-28-2020, 10:40 AM
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Well I went for it and bought the rears.. figure if they dont fit I will just resell them.
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