Cracked Rotors?

classic_erik · 09-30-2022, 03:50 PM

Maybe the dumbest question of the century but have to think this is no bueno and can't be used? Swapping out my MPBK for stock and just saw this on the back side inner ring on both of the rear stock 50i rotors…

beats · 09-30-2022, 05:31 PM

i would replace. that might only impact the emergency brake, but not worth the risk. grab from fcp euro with the lifetime warranty in case it happens again...

blue dragon · 09-30-2022, 07:36 PM

I was going to say parking brake will be impacted, but how the heck does a rotor crack like that

classic_erik · 09-30-2022, 08:34 PM

Quote:

Originally Posted by blue dragon

I was going to say parking brake will be impacted, but how the heck does a rotor crack like that

Sadly I purchased a stock 50i kit recently from another member and this is how they arrived (both rears). I'll buy new rear rotors cheap and move on…

tlow98 · 09-30-2022, 11:19 PM

Oof. Yeah unsafe plus pretty far out of balance.

classic_erik · 10-01-2022, 11:13 AM

New rear set ordered! $195 shipped not too bad.

https://www.rockauto.com/en/moreinfo...t=13824&jsn=10

djrabbi · 10-01-2022, 02:25 PM

Quote:

Originally Posted by classic_erik

New rear set ordered! $195 shipped not too bad.

https://www.rockauto.com/en/moreinfo...t=13824&jsn=10

I just replaced my calipers on X7 and got these brand pads also. Barely any dust and almost OEM bite

chocolatef15 · 10-03-2022, 10:27 PM

Hey guys, recently picked up my 18' F15 50i, I have been wondering if its normal when putting it on park the car jerks forwards and back before fully stops like an automatic almost. Upgrading the breaks would solve this? Not an issue but looks a bit funny.

lonestar22 · 10-04-2022, 12:52 AM

That rotors was dropped at some point. That's not normal damage to happen on a car unless there was a crash.

09-30-2022, 03:50 PM	#1
classic_erik Lieutenant Colonel 2810 Rep 1,859 Posts Drives: 23' X7 40i M Sport Join Date: Jan 2019 Location: South Shore, MA iTrader: (12) Garage List 2023 BMW X7 40i M S ... [0.00] 2020 Audi SQ5 [0.00]	Maybe the dumbest question of the century but have to think this is no bueno and can't be used? Swapping out my MPBK for stock and just saw this on the back side inner ring on both of the rear stock 50i rotors… Attached Images __________________ My F15 50i M Sport Build Thread
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09-30-2022, 05:31 PM	#2
beats Lieutenant 225 Rep 599 Posts Drives: 2015 911 GTS Join Date: Jun 2013 Location: Toronto iTrader: (0)	i would replace. that might only impact the emergency brake, but not worth the risk. grab from fcp euro with the lifetime warranty in case it happens again...
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09-30-2022, 07:36 PM	#3
blue dragon Lieutenant Colonel 1192 Rep 1,545 Posts Drives: '22 Tesla MY + '23 Tesla MY Join Date: Jul 2010 Location: Land of high taxes and crappy healthcare iTrader: (2)	I was going to say parking brake will be impacted, but how the heck does a rotor crack like that __________________ \| '22 Tesla Model Y P - My daily \| '23 Tesla Model Y LR - Wife's daily \| '17 F15 35D - missed daily \|
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09-30-2022, 11:19 PM	#5
tlow98 Major General 2191 Rep 5,007 Posts Drives: 2009 E91, 2014 F15 x35i Join Date: Aug 2011 Location: Bay Area iTrader: (2)	Oof. Yeah unsafe plus pretty far out of balance.
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10-01-2022, 11:13 AM	#6
classic_erik Lieutenant Colonel 2810 Rep 1,859 Posts Drives: 23' X7 40i M Sport Join Date: Jan 2019 Location: South Shore, MA iTrader: (12) Garage List 2023 BMW X7 40i M S ... [0.00] 2020 Audi SQ5 [0.00]	New rear set ordered! $195 shipped not too bad. https://www.rockauto.com/en/moreinfo...t=13824&jsn=10 __________________ My F15 50i M Sport Build Thread Last edited by classic_erik; 10-01-2022 at 11:23 AM..
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Cracked Rotors?

10-03-2022, 10:27 PM	#8
chocolatef15 Registered 0 Rep 3 Posts Drives: 18 BMW X5 M Sport 50i / BMW M6 Join Date: Sep 2022 Location: Edmonton, AB iTrader: (0)	Hey guys, recently picked up my 18' F15 50i, I have been wondering if its normal when putting it on park the car jerks forwards and back before fully stops like an automatic almost. Upgrading the breaks would solve this? Not an issue but looks a bit funny.
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10-04-2022, 12:52 AM	#9
lonestar22 Ground Clearance? 232 Rep 1,651 Posts Drives: 540i & X5 Join Date: Jul 2009 Location: DFW iTrader: (-1)	That rotors was dropped at some point. That's not normal damage to happen on a car unless there was a crash.
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