Brake Pad Replacement One Time Caliper Nuts

fanofbmwe46 · 07-03-2023, 03:16 PM

Those of you who have replaced your brake pads on a G8X. Do you always replace the one time nuts with new ones? Part number 34112284399 x quantity of 4

How imparative is it to do so?

forcefed · 07-03-2023, 07:48 PM

I've heard of torque to yield bolts/studs... but one time use nuts? If the nut is being replaced why not the stud?
You can try to find the nut yourself, its simply a m12x1.5 flanged nut with a 10.9 grade hardness, but its hot dipped galvanized i believe so not exactly easy to find. The amount the dealer wants for this is.... nuts.
I reused mine.

chris3g · 07-03-2023, 07:52 PM

According to the offical procedures per BMW TIS, nearly every bolt and nut torqued to more than 10nm on the entire car is marked as “renew”. Took your exhaust brace off? That will be 6 new bolts, per BMW. It’s a bit ridiculous really.

fanofbmwe46 · 07-03-2023, 08:26 PM

What’s the worse that could happen.. caliper falls off? That would of course be catastrophic.. but what are those chances? If torqued correctly and inspected every so often is that sufficient enough?

forcefed · 07-03-2023, 09:07 PM

Quote:

Originally Posted by fanofbmwe46

What’s the worse that could happen.. caliper falls off? That would of course be catastrophic.. but what are those chances? If torqued correctly and inspected every so often is that sufficient enough?

It actually can't fall off because to take it off you pull it off to the side and it needs to clear the rotors... thankfully the wheels will block it from ever doing that

vbb · 07-04-2023, 07:25 AM

I did not. I just retorqued everything down to spec and got on with it. Same with the exhaust brace when I replaced my midpipe.

Jon H · 07-04-2023, 07:49 PM

Reused and immediately had a track day. No issues.

beamlord · 07-05-2023, 07:56 AM

Quote:

Originally Posted by chris3g

According to the offical procedures per BMW TIS, nearly every bolt and nut torqued to more than 10nm on the entire car is marked as “renew”. Took your exhaust brace off? That will be 6 new bolts, per BMW. It’s a bit ridiculous really.

I did a brake pads change at the dealer and they didn't replace the nuts. Obviously they are following the TIS, so I guess even the BMW mechanics don't believe this is necessary.

LuckyBrand · 07-31-2023, 07:17 PM

I didn't replace mine. No issues.

07-03-2023, 03:16 PM	#1
fanofbmwe46 Major 2071 Rep 1,159 Posts Drives: M3 Join Date: Oct 2020 Location: united states iTrader: (0)	Those of you who have replaced your brake pads on a G8X. Do you always replace the one time nuts with new ones? Part number 34112284399 x quantity of 4 How imparative is it to do so?
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07-03-2023, 07:48 PM	#2
forcefed Lieutenant Colonel 2567 Rep 1,929 Posts Drives: . Join Date: Sep 2021 Location: Toronto iTrader: (0)	I've heard of torque to yield bolts/studs... but one time use nuts? If the nut is being replaced why not the stud? You can try to find the nut yourself, its simply a m12x1.5 flanged nut with a 10.9 grade hardness, but its hot dipped galvanized i believe so not exactly easy to find. The amount the dealer wants for this is.... nuts. I reused mine. __________________ 2023 m3 xdrive For sale: M3 Eibach pro kit springs, csl gloss black grill with acc, gloss black lip
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07-03-2023, 07:52 PM	#3
chris3g Major 1569 Rep 1,257 Posts Drives: 2023 M3 xdrive Join Date: Jan 2012 Location: NJ iTrader: (4)	According to the offical procedures per BMW TIS, nearly every bolt and nut torqued to more than 10nm on the entire car is marked as “renew”. Took your exhaust brace off? That will be 6 new bolts, per BMW. It’s a bit ridiculous really.
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07-03-2023, 08:26 PM	#4
fanofbmwe46 Major 2071 Rep 1,159 Posts Drives: M3 Join Date: Oct 2020 Location: united states iTrader: (0)	What’s the worse that could happen.. caliper falls off? That would of course be catastrophic.. but what are those chances? If torqued correctly and inspected every so often is that sufficient enough?
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07-04-2023, 07:25 AM	#6
vbb Captain 1864 Rep 935 Posts Drives: 2022 M4 manual Join Date: Jul 2007 Location: present iTrader: (4)	I did not. I just retorqued everything down to spec and got on with it. Same with the exhaust brace when I replaced my midpipe. __________________ Previous notables: '05 S2000 \| '07 335i \| '09 ISF \| '08 911 Turbo \| '09 911 C2 \| '15 Cayman \| '15 RCF \| '17 MX-5 RF \| '17 C7 Corvette
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07-04-2023, 07:49 PM	#7
Jon H Second Lieutenant 392 Rep 295 Posts Drives: 2015 911 GT3 Join Date: Aug 2013 Location: Orcutt, CA iTrader: (0)	Reused and immediately had a track day. No issues. __________________ M3Cx, E92 M3 6MT Previous cars: '21 Supra, '17 GT-R, '15 GT3, '13 GT-R '09 GT-R, '06 Z06, '06 Evo MR, '05 M3, '03 Evo, '00 Miata.
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07-31-2023, 07:17 PM	#9
LuckyBrand Captain 1317 Rep 879 Posts Drives: BMW X5 F15, G05 X5, G80 M3 6sp Join Date: Dec 2020 Location: Michigan iTrader: (0)	I didn't replace mine. No issues.
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