Question stud kit & new front rotors?

Vanne · 01-09-2015, 01:13 PM

Hi, if I have my stud kit installed, to install new front brake rotors, will I have to remove the stud kit?

I ask, cos I am thinking of using locktite on the kit, which will be a pain to remove again...

Hope someone can shed some light on this, otherwise I will wait to install the apex kit.

RobMCoupe · 01-09-2015, 01:16 PM

You'll need to transfer the studs over to new rotor.

jdoublehcubed · 01-09-2015, 01:21 PM

Quote:

Originally Posted by RobMCoupe

You'll need to transfer the studs over to new rotor.

Totally wrong. Studs are installed into the hub, and the rotor slips over them. The only time you would need to remove the studs is if you changed hubs. Also, if you need to adjust your parking break, you would need to remove one stud from the rear, as the adjustment is accessible via the lugbolt hole. But generally you do not need to make that adjustment.

I believe studs are installed in the rotors for 90's GM trucks, off the top of my head. Nothing made by BMW (or other recent German vehicles), as far as I know.

inTgr8r · 01-09-2015, 01:29 PM

Yes, studs thread into the hub.

The HACK · 01-09-2015, 01:40 PM

You can make parking brake adjustment without removing a stud, although it IS a challenge.

When I changed out the rear rotors for the RB 2 piece floaties, I had to re-adjust the parking brake shoes. The only way to do it is to remove the rotor, figure out which way the wheel turns to tighten/loosen, then adjust 5 clicks at a time, put rotor back on, pull the hand brake, and see if the rotor turns in neutral (while the whole backend is up in the air, meaning the other wheel can't be on the ground). Once it's tight enough not to turn the rotor when the parking brake is pulled up 3 clicks, and the rotor spins freely when released, you can tighten the parking brake cable from underneath the parking brake handle to fine-tune.

pokeybritches · 01-09-2015, 10:54 PM

PLEASE use red Loctite on the install. You never want to risk the studs backing out. Better to have to deal with a PITA removal than an unintended one...

Vanne · 01-09-2015, 11:21 PM

Thx guys, red locktite it is, and the rotor will slip over the top of them correct?

jdoublehcubed · 01-10-2015, 02:42 AM

Yes.

And if you ever need to remove them after red locktite, just heat them up with a torch for a bit and it will break the bond.

Efthreeoh · 01-17-2015, 07:29 AM

Other than racing, I'm not sure what a stud kit does for you. Yes, I understand installing a wheel on the front hub is a pain to line up the bolt holes, but BMW makes a tool (a long shaft), and several aftermarket companies make a similar tool, that fits into the bolt hole on the hub and allows the wheel to be slid over the shaft and it lines up the bolt holes once the wheel fits onto the hub center. Older BMWs, when they actually had spare tires, always came with this tool.

The BMW P/N is 71111093774 It's about $12.

RADRACR · 01-17-2015, 02:09 PM

Quote:

Originally Posted by Efthreeoh

Other than racing, I'm not sure what a stud kit does for you. Yes, I understand installing a wheel on the front hub is a pain to line up the bolt holes....

I never understood why it's a pain to install a wheel. You just hang the wheel on the hub and rotate it until you align the holes

As for studs, my primary reason was for cosmetics. Aftermarket wheels look better with a nice shiny lug/stud combo.

inTgr8r · 01-17-2015, 02:15 PM

Quote:

Originally Posted by RADRACR

I never understood why it's a pain to install a wheel. You just hang the wheel on the hub and rotate it until you align the holes

As for studs, my primary reason was for cosmetics. Aftermarket wheels look better with a nice shiny lug/stud combo.

how do you rotate the fronts & keep the hubs from turning?

RADRACR · 01-18-2015, 11:43 AM

Quote:

Originally Posted by inTgr8r

how do you rotate the fronts & keep the hubs from turning?

From what I remember, the wheel turned before the hub would. But I do grease the rotor after learning the lesson of a seized wheel years back.

01-09-2015, 01:13 PM	#1
Vanne Down Under!! 1621 Rep 4,294 Posts Drives: 2007 Z4MC Join Date: Mar 2013 Location: Dubai iTrader: (4)	Question stud kit & new front rotors? Hi, if I have my stud kit installed, to install new front brake rotors, will I have to remove the stud kit? I ask, cos I am thinking of using locktite on the kit, which will be a pain to remove again... Hope someone can shed some light on this, otherwise I will wait to install the apex kit. __________________ 2007 EuroSpec Z4///MC - Building/Developing Z4 GT3 Powered by
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01-09-2015, 01:16 PM	#2
RobMCoupe Captain 60 Rep 932 Posts Drives: 2007 Z4 M Coupe Join Date: Feb 2010 Location: Bay Area iTrader: (6)	You'll need to transfer the studs over to new rotor.
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01-09-2015, 01:29 PM	#4
inTgr8r Lieutenant General 2426 Rep 11,667 Posts Drives: M2 Comp Join Date: Mar 2006 Location: Toronto iTrader: (10)	Yes, studs thread into the hub. __________________ '21 M2C Hockenheim Silver '18 718 Cayman S Lava Orange (sold) '13 E92 M3 Santorini Blue (sold) '07 Z4 M Coupe Alpine White (sold)
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01-09-2015, 01:40 PM	#5
The HACK Midlife Crises Racing Silent but Deadly Class 1820 Rep 5,337 Posts Drives: 2006 MZ4C, 2021 Tesla Model 3 Join Date: Oct 2007 Location: Welcome to Jamaica have a nice day iTrader: (1)	You can make parking brake adjustment without removing a stud, although it IS a challenge. When I changed out the rear rotors for the RB 2 piece floaties, I had to re-adjust the parking brake shoes. The only way to do it is to remove the rotor, figure out which way the wheel turns to tighten/loosen, then adjust 5 clicks at a time, put rotor back on, pull the hand brake, and see if the rotor turns in neutral (while the whole backend is up in the air, meaning the other wheel can't be on the ground). Once it's tight enough not to turn the rotor when the parking brake is pulled up 3 clicks, and the rotor spins freely when released, you can tighten the parking brake cable from underneath the parking brake handle to fine-tune. __________________ Sitting on a beat-up office chair in front of a 5 year old computer in a basement floor, sipping on stale coffee watching a bunch of meaningless numbers scrolling aimlessly on a dimly lit 19” monitor.
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01-09-2015, 10:54 PM	#6
pokeybritches Colonel 479 Rep 2,782 Posts Drives: ESS/G-Power Z4M, VF Z4, 996tt Join Date: Sep 2009 Location: Los Angeles iTrader: (12) Garage List 2006 BMW Z4M [10.00] 2006 BMW Z4M [8.50] 2003 BMW Z4 3.0i [9.00]	PLEASE use red Loctite on the install. You never want to risk the studs backing out. Better to have to deal with a PITA removal than an unintended one... __________________ VF Engineering Z4 3.0i, ESS Z4M, G-Power Z4M, 996 Turbo
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01-09-2015, 11:21 PM	#7
Vanne Down Under!! 1621 Rep 4,294 Posts Drives: 2007 Z4MC Join Date: Mar 2013 Location: Dubai iTrader: (4)	Thx guys, red locktite it is, and the rotor will slip over the top of them correct?
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01-10-2015, 02:42 AM	#8
jdoublehcubed Mechanical Engineer 96 Rep 1,025 Posts Drives: 2006 Z4MR, Imola Red Join Date: Jul 2012 Location: Anaheim, CA iTrader: (1)	Yes. And if you ever need to remove them after red locktite, just heat them up with a torch for a bit and it will break the bond.
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01-17-2015, 07:29 AM	#9
Efthreeoh General 17201 Rep 18,691 Posts Drives: The E90 + Z4 Coupe & Z3 R'ster Join Date: May 2012 Location: Virginia iTrader: (0)	Other than racing, I'm not sure what a stud kit does for you. Yes, I understand installing a wheel on the front hub is a pain to line up the bolt holes, but BMW makes a tool (a long shaft), and several aftermarket companies make a similar tool, that fits into the bolt hole on the hub and allows the wheel to be slid over the shaft and it lines up the bolt holes once the wheel fits onto the hub center. Older BMWs, when they actually had spare tires, always came with this tool. The BMW P/N is 71111093774 It's about $12. Last edited by Efthreeoh; 01-17-2015 at 07:40 AM..
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