Broken Front Wheel Studs

Alan Nyhus · 09-15-2020, 07:40 AM

A headless stud is dependent on the threaded fit between stud and hub for alignment. Lacking a head, the stud is going to pivot in the hub thread and be loaded/twisted along it's length as the wheel nut is torqued. Not hard to imagine what happens then. -Al

r429469 · 09-15-2020, 01:06 PM

I have had this happen, a spacer between the wheel and the hub caused the studs to brake. I'm not sure from the pictures but, is there some kind of spacer on your hubs?

CMcAllister · 09-15-2020, 01:57 PM

Granted I don't pay attention to what every company offers outside of my preferred sources, but I have never seen a headless stud offered for this application outside of the 5/8 drive studs using jamnuts of rear axles. Nor would I consider using them.

I don't want to bash anyone who supports racing, but that's a head scratcher.

65signet · 09-15-2020, 05:43 PM

I bought some Moser studs for my rear axels, and i was not impressed with the quality.

Capri · 10-10-2020, 08:35 PM

The center bore on the wheel is something that was a problem when going to aftermarket brakes. Depending on the wheel brand, either the wheel had to be machined to accept the hub, or you had to run a spacer under the rotor hat. Even though the wheel would appear to sit flush on the hub, it would be off and start to bend the stud if you forced it to tighten up. This was something more specific to the 4 lug wheels compared to any of the 5 lug. So then even at a torque spec of 50lbs, it wouldnt torque correctly but it would tighten up. Would cause a pretty good vibration in the front end rolling along that you could chase for a bit.

Run to Rund · 11-21-2020, 10:36 PM

Proper torque is affected strongly by cleanliness of threads, coating on the threads, type of lube,

09-15-2020, 07:40 AM	#1
Alan Nyhus VIP Member Join Date: Dec 2002 Location: Lower Dakota territory Posts: 1,180 Likes: 1,074 Liked 799 Times in 236 Posts	Re: Broken Front Wheel Studs A headless stud is dependent on the threaded fit between stud and hub for alignment. Lacking a head, the stud is going to pivot in the hub thread and be loaded/twisted along it's length as the wheel nut is torqued. Not hard to imagine what happens then. -Al __________________ "That'll never work....." Last edited by Alan Nyhus; 09-15-2020 at 08:47 AM.

09-15-2020, 01:06 PM	#2
r429469 Member Join Date: Aug 2020 Posts: 68 Likes: 84 Liked 40 Times in 26 Posts	Re: Broken Front Wheel Studs I have had this happen, a spacer between the wheel and the hub caused the studs to brake. I'm not sure from the pictures but, is there some kind of spacer on your hubs?

09-15-2020, 01:57 PM	#3
CMcAllister Senior Member Join Date: Sep 2006 Location: Fulton County, PA Posts: 614 Likes: 16 Liked 920 Times in 259 Posts	Re: Broken Front Wheel Studs Granted I don't pay attention to what every company offers outside of my preferred sources, but I have never seen a headless stud offered for this application outside of the 5/8 drive studs using jamnuts of rear axles. Nor would I consider using them. I don't want to bash anyone who supports racing, but that's a head scratcher.

09-15-2020, 05:43 PM	#4
65signet Member Join Date: May 2010 Location: El Dorado Ca. Posts: 122 Likes: 296 Liked 44 Times in 21 Posts	Re: Broken Front Wheel Studs I bought some Moser studs for my rear axels, and i was not impressed with the quality. __________________ Steven Barnes Stock 704 N/SA

10-10-2020, 08:35 PM	#5
Capri Member Join Date: Apr 2004 Posts: 171 Likes: 0 Liked 27 Times in 14 Posts	Re: Broken Front Wheel Studs The center bore on the wheel is something that was a problem when going to aftermarket brakes. Depending on the wheel brand, either the wheel had to be machined to accept the hub, or you had to run a spacer under the rotor hat. Even though the wheel would appear to sit flush on the hub, it would be off and start to bend the stud if you forced it to tighten up. This was something more specific to the 4 lug wheels compared to any of the 5 lug. So then even at a torque spec of 50lbs, it wouldnt torque correctly but it would tighten up. Would cause a pretty good vibration in the front end rolling along that you could chase for a bit.

11-21-2020, 10:36 PM	#6
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 583 Likes: 8 Liked 54 Times in 27 Posts	Re: Broken Front Wheel Studs Proper torque is affected strongly by cleanliness of threads, coating on the threads, type of lube,