2015 535i xDrive front caliper mounting bolt size

ngiovas · 06-26-2021, 11:31 AM

I was planning to replace the rotors and brake pads on my 2015 535i xdrive, but after removing the wheel, I realized that the caliper mounting bolts were not hex head as expected, but were actually an e-torx bolt. Can anyone tell me what size e torx socket is required to remove these bolts? It appears to be close to an e18, but when I tried this size, it seemed like it was a bit loose, so I wanted to ask before attempting to remove it and potentially rounding off the head.

Also, can anyone tell me the size of the bolt itself so I can get a set of replacement bolts?

Any help would be appreciated.

Nick

Hoa · 06-26-2021, 10:21 PM

I believe it is a 9mm Allen / Hex

Blue Angel · 06-26-2021, 10:24 PM

I can't confirm the size, but I will say you made the right move to be cautious. Torx and e-torx bits should fit snugly with nearly no play. Also be careful that there's no dirt or corrosion built up between the fastener and the bit, leading to a fit that feels tight but is actually the incorrect size.

burro_blasta · 06-27-2021, 04:18 AM

I guess I didn't include it in my notes but my first thought was e17...which would make sense with the 18 feeling loose.

+1 with prior post on being cautious with those. Always best to keep sizing down till one size too small then go back up one size so you're totally sure. Realoem.com to find the bolt replacement part number

burro_blasta · 06-27-2021, 04:23 AM

I think this is it but you should verify on Realoem.com. Also I did my back brakes not front but looks like it's the same either way

https://www.fcpeuro.com/products/bmw...nt-34116772117

Unspec · 06-27-2021, 06:03 PM

If I remember correctly, it was E16 when I did it. That said, just have an e-torx socket set. BMW uses a lot of e-torx

06-26-2021, 11:31 AM	#1
ngiovas New Member 0 Rep 5 Posts Drives: F10 Join Date: Jul 2018 Location: MI iTrader: (0)	2015 535i xDrive front caliper mounting bolt size I was planning to replace the rotors and brake pads on my 2015 535i xdrive, but after removing the wheel, I realized that the caliper mounting bolts were not hex head as expected, but were actually an e-torx bolt. Can anyone tell me what size e torx socket is required to remove these bolts? It appears to be close to an e18, but when I tried this size, it seemed like it was a bit loose, so I wanted to ask before attempting to remove it and potentially rounding off the head. Also, can anyone tell me the size of the bolt itself so I can get a set of replacement bolts? Any help would be appreciated. Nick
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06-26-2021, 10:21 PM	#2
Hoa Major 513 Rep 1,356 Posts Drives: BMW Join Date: May 2010 Location: GA iTrader: (9)	I believe it is a 9mm Allen / Hex
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06-26-2021, 10:24 PM	#3
Blue Angel Major 996 Rep 1,035 Posts Drives: 2011 323i and 2016 535d Join Date: Mar 2011 Location: Ottawa, ON iTrader: (0)	I can't confirm the size, but I will say you made the right move to be cautious. Torx and e-torx bits should fit snugly with nearly no play. Also be careful that there's no dirt or corrosion built up between the fastener and the bit, leading to a fit that feels tight but is actually the incorrect size.
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06-27-2021, 04:18 AM	#4
burro_blasta Lieutenant 130 Rep 441 Posts Drives: 2013 535 M Sport Join Date: Sep 2018 Location: CO iTrader: (0)	I guess I didn't include it in my notes but my first thought was e17...which would make sense with the 18 feeling loose. +1 with prior post on being cautious with those. Always best to keep sizing down till one size too small then go back up one size so you're totally sure. Realoem.com to find the bolt replacement part number __________________ 2013 535xi M Sport (PWG) // PS2 // Spool fx150 // MHD // xHP // FTP Inlet // FBO: AR HF DP, Wagner IC, BMS Intake, VRSF CP
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06-27-2021, 04:23 AM	#5
burro_blasta Lieutenant 130 Rep 441 Posts Drives: 2013 535 M Sport Join Date: Sep 2018 Location: CO iTrader: (0)	2015 535i xDrive front caliper mounting bolt size I think this is it but you should verify on Realoem.com. Also I did my back brakes not front but looks like it's the same either way https://www.fcpeuro.com/products/bmw...nt-34116772117 __________________ 2013 535xi M Sport (PWG) // PS2 // Spool fx150 // MHD // xHP // FTP Inlet // FBO: AR HF DP, Wagner IC, BMS Intake, VRSF CP
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06-27-2021, 06:03 PM	#6
Unspec Colonel 1295 Rep 2,587 Posts Drives: 2015 BMW 535xi Join Date: Apr 2019 Location: DMV iTrader: (1)	If I remember correctly, it was E16 when I did it. That said, just have an e-torx socket set. BMW uses a lot of e-torx __________________ 2015 BMW 535xi Bootmod3 Stage 2 \| ER charge pipe \| ER Catted DP \| Remus Exhaust \| Gplus FMIC \| KW V3 \| Turner Monoball thrust arm bushings \| Wallet regrets ISTA VM Setup/Tutorial
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