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Wheel Stud Bolt Snapped #4489061
08/15/17 08:52 AM
08/15/17 08:52 AM
Joined: May 2014
Posts: 444
UK
slybunda Offline OP
slybunda  Offline OP
Joined: May 2014
Posts: 444
UK
so after caliper problem issue is fixed another issue has cropped up. looks like i tightened up the wheel nut too much and the bolt stud snapped this is front drivers side wheel.

can get a new stud easily but how do i go about replacing it? does the hub have to be removed or is it just a case of using a punch and hammer to knock out the remaining stud and replace it with a new one?


1995 Ford Fiesta 1.6i 16v Si
2000 Toyota Celica 1.8 VVTL-i
2007 Toyota Aygo+ 1.0i
Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489078
08/15/17 09:09 AM
08/15/17 09:09 AM
Joined: Aug 2010
Posts: 5,693
Champlain/Hudson Valley
Kira Online content
Kira  Online Content
Joined: Aug 2010
Posts: 5,693
Champlain/Hudson Valley
You have a shouldered flange (back side) and ribbed metal body of the stud in the axle hub and all the threading (pictured) sheared off. You might be able to heat the hub a bit and hit it out, yes.

Would there be clearance enough to insert the replacement?

This is part of the reason I use anti-seize on lugs.
1) Yes, you have to reduce torque with "lubed" threads. Torque specs are for dry thread.
2) No, your wheels won't fly off whilst driving. I'm living proof of that as well as all my friends.
3) I've heard the large size of lug hardware provides a broader range of usable torques.
4) Rusty, scaly threads drag and grab to the point of hanging up-they chatter-and that's what happened in your situation.

Which car in your signature was it?

Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489081
08/15/17 09:11 AM
08/15/17 09:11 AM
Joined: Jan 2009
Posts: 13,837
Illinois
tig1 Offline
tig1  Offline
Joined: Jan 2009
Posts: 13,837
Illinois
Depends on the degree of difficulty. I would remove the wheel though. However always use a torque wrench in tightening wheel nuts. This prevents what you did, and helps prevent run-out with the roters.

Last edited by tig1; 08/15/17 09:13 AM.

2007 Ford Fusion 232,000 miles
M1 0-20 EP
2017 Ford Fusion 55K
M1 0-20 EP
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Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489086
08/15/17 09:17 AM
08/15/17 09:17 AM
Joined: Jun 2003
Posts: 5,921
Illinois
SHOZ Offline
SHOZ  Offline
Joined: Jun 2003
Posts: 5,921
Illinois
On my Accent I had a front and rear stud snap. This was from messing up the threads using an air wrench to tighten them down.

The front was a PIT due to the heat shield behind the rotor. Hyundai has it as an integral part of the hub and the only way to remove it is to press the hub out of the knuckle.

But there is one spot where the shield does not cover the rear 100%. So I positioned the broke stud there and knocked it out. But to reinstall I had to bend the shield 90* to gain enough clearance.

Terrible design but a bent up shield is no big deal.

Make sure the studs you get are equal to the ones taken out in length.


2008 Hyundai Accent 1.6L 5 sp manual hatchback
2010 Hyundai Genesis Coupe Track 2L Turbo 6sp manual
Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489094
08/15/17 09:26 AM
08/15/17 09:26 AM
Joined: Aug 2013
Posts: 2,531
Central Maryland
HangFire Offline
HangFire  Offline
Joined: Aug 2013
Posts: 2,531
Central Maryland
Originally Posted By: slybunda
can get a new stud easily but how do i go about replacing it? does the hub have to be removed or is it just a case of using a punch and hammer to knock out the remaining stud and replace it with a new one?


Depends on the vehicle, some are easier than others, some fronts or backs differ as well.

BTW does everyone here expect everyone else to guess which vehicle is involved in a technical question? I'm not going to dig back into the OP's posting history just to figure out which vehicle.


Various musings: http://hangfire.net
Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489104
08/15/17 09:44 AM
08/15/17 09:44 AM
Joined: Dec 2008
Posts: 3,082
Occupied Virginia
Bottom_Feeder Offline
Bottom_Feeder  Offline
Joined: Dec 2008
Posts: 3,082
Occupied Virginia
The last time I replaced a stud it was on my wife's 2002 Corolla. I did it the 'wrong' way by giving it one solid smack with a heavy hammer (eye protection mandatory!) and it popped out of the hub. Installing it was just stacking a bunch of greased washers (like a poor-man's thrust bearing) under a reversed (flat side facing in) lug nut and wrenching it down until the stud flange bottomed out. Do NOT go any further than that or you will stress the new stud and probably ruin the threads and even possibly break it. Don't be an ape.

I take no responsibility for hurting your car or yourself if you do it this way.

Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489114
08/15/17 10:02 AM
08/15/17 10:02 AM
Joined: Dec 2006
Posts: 7,663
Toronto, Canada
KrisZ Offline
KrisZ  Offline
Joined: Dec 2006
Posts: 7,663
Toronto, Canada
Unless it's an optical illusion, you can see the stud thin out where the rusty thread is. This stud was overtorqued several times before it finally sheared off. It can be replaced, but I would check other studs for this and replace as well.


2015 Dodge Grand Caravan-27k miles.
2006 Mazda 3-163k miles
Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489190
08/15/17 11:35 AM
08/15/17 11:35 AM
Joined: May 2014
Posts: 444
UK
slybunda Offline OP
slybunda  Offline OP
Joined: May 2014
Posts: 444
UK
i think where its thinned out its stretched or something.
car was the celica.
looks like it should be a straight forwards job if i follow this guide.: https://www.celicahobby.com/forums/ubbth...to-replace.html

iv got the replacement stud so will fit it tomorrow.
will look to order a whole set of replacements for the car.


1995 Ford Fiesta 1.6i 16v Si
2000 Toyota Celica 1.8 VVTL-i
2007 Toyota Aygo+ 1.0i
Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489222
08/15/17 12:17 PM
08/15/17 12:17 PM
Joined: Dec 2006
Posts: 7,663
Toronto, Canada
KrisZ Offline
KrisZ  Offline
Joined: Dec 2006
Posts: 7,663
Toronto, Canada
Originally Posted By: slybunda
i think where its thinned out its stretched or something.


Yes and it's a sign that the stud is now junk, as the internal structure of the metal changed and its tensile strength is severely compromised.
Inspect the rest of the studs for this thinning or thread deformation and replace ASAP. Your life could depend on it.
I'm not the one to cry safety, but seeing this stud doesn't inspire any confidence in me that the rest are fine.


2015 Dodge Grand Caravan-27k miles.
2006 Mazda 3-163k miles
Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489297
08/15/17 01:41 PM
08/15/17 01:41 PM
Joined: Nov 2013
Posts: 64
York, Pa
fozzdesy2001 Offline
fozzdesy2001  Offline
Joined: Nov 2013
Posts: 64
York, Pa
I think this is an excellent use of a tool to remove and put in / remove wheel studs because you can leave the hub in place.
I can not post just a picture of the tool removing a wheel stud but you can see the images in the Amazon link. I have this separator tool and believe it is strong enough to do the job but might open large enough for your car. Putting them in with this you would flip it so the tightening screw will face away from the hub to give plenty of room.

https://www.amazon.com/GearWrench-3916D-...Joint+Separator


2001 Subaru Forester S
Replaced with a 2006 Forester

2004 Subaru Forester XT
Death by deer. Replaced with 2003 Impreza Outback Sport (beater)
Re: Wheel Stud Bolt Snapped [Re: HangFire] #4489306
08/15/17 01:52 PM
08/15/17 01:52 PM
Joined: Apr 2017
Posts: 1,480
Ontario, Canada
mightymousetech Offline
mightymousetech  Offline
Joined: Apr 2017
Posts: 1,480
Ontario, Canada
Originally Posted By: HangFire

Depends on the vehicle, some are easier than others, some fronts or backs differ as well.


Exactly. Have had a couple MDX recently with broken studs as the customer forgot to remove the hub ring when they put their summer OE wheels back on. On the front of an MDX you can not remove/install the stud without removing the hub. That means pulling the hub, when you remove the hub, you have to replace the wheel bearing, that means removing the front knuckle, and after all that, a four wheel align. Turned in to a $700 job. Same job on the back, one hit with a hammer, stud out, push in new stud. Done.

I would never ever use anti seize on the threads, but using closed end wheel nuts will keep the studs clean. The only time I see corroded wheel studs is when people have ditched their OE closed ended ones and replaced with open ended ones that exposes the stud to the elements.


Last edited by mightymousetech; 08/15/17 01:56 PM.

Mighty Mouse Tech
BMW Tech, Former Acura Tech
2010 Civic Si Castrol 0W40, Redline MTL
2013 BMW 135i M Sport Edition Castrol 0W40, Redline MTL
Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489414
08/15/17 03:24 PM
08/15/17 03:24 PM
Joined: May 2014
Posts: 444
UK
slybunda Offline OP
slybunda  Offline OP
Joined: May 2014
Posts: 444
UK
should i put grease on the stud splines the part of the stud that sits in the hub?


1995 Ford Fiesta 1.6i 16v Si
2000 Toyota Celica 1.8 VVTL-i
2007 Toyota Aygo+ 1.0i
Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489417
08/15/17 03:29 PM
08/15/17 03:29 PM
Joined: Jun 2003
Posts: 5,921
Illinois
SHOZ Offline
SHOZ  Offline
Joined: Jun 2003
Posts: 5,921
Illinois
I would not. You are looking for a friction fit. Try to somewhat line the splines up.


2008 Hyundai Accent 1.6L 5 sp manual hatchback
2010 Hyundai Genesis Coupe Track 2L Turbo 6sp manual
Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489494
08/15/17 05:01 PM
08/15/17 05:01 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Originally Posted By: slybunda
should i put grease on the stud splines the part of the stud that sits in the hub?


I'd put a thin coat of anti-seize on them.

Re: Wheel Stud Bolt Snapped [Re: slybunda] #4489776
08/15/17 10:22 PM
08/15/17 10:22 PM
Joined: Dec 2010
Posts: 3,353
Los Angeles, California
Gokhan Offline
Gokhan  Offline
Joined: Dec 2010
Posts: 3,353
Los Angeles, California


1985 Toyota Corolla LE, 4A-LC engine, ~ 270,000 M
Toyota (TGMO) 0W-20 SN high-moly GTL (new formulation)
Mobil 1 EP M1-103 filter, 90430-12031 drain gasket
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