Wheel Studs

[MAURICE BLENDHEIM]

Originally Posted by Dan Fahey

Broke a set last year on starting line and missed the Xmas Tree.

Been seeing others lose a wheel from broken Studs.
How often are they replaced?
Is there any special tightening process?
I torque mine to 110 lbs on Aluminum wheels.

Are Moser and ARP the same quality?

D

Dan… Are you using Wheel Spacers? MB

[Dan Fahey]

Originally Posted by MAURICE BLENDHEIM

Dan… Are you using Wheel Spacers? MB

No....spacers!.

This year seen a few cars at various drag strips loose wheels.
Bit more than years before.

Moser Studs my car uses are supposedly made from high grade steel.
Figured 110Lb was ok.. was using 85# when they broke.
Some performance wheels are tightened to 110.

I had never broken any in 40 years of racing until last year.
Now more cautious checking the Lug Nuts before each race.

D

[John Dinkel]

After re installing wheels I re torque after the first run. Usually find a few that need to
be re torqued.

[Jim Wahl]

Never more than 90# with aluminum wheels! Never less than 75#. 110 is too much stress on the studs. Jim


.

[brett3533]

I think its possible to over torque wheels that have an inner spacer. After they have been over torqued they begin to rattle when off the car or when being rotated or even rotate where the universal bolt pattern will not align up then if the shank or shoulder does not protrude thru the wheel and the inner spacer has been crushed due to over torqueing when it gets torqued then the nut bottoms out on the shoulder and it may be a little loose allowing it to snap them off ! I like mine torqued at 85ft.lbs for the rear and 65ft.lbs on the fronts also helps keep the rotors from warping from over doing it

[Eman]

https://www.weldwheels.com/wp-conten...ifications.pdf
https://arpinstructions.com/generaltorque.html
ARP says 125 ft. lbs. Weld says 85-95 ft. lbs.

[Coleydog]

First you have to find out if they're braking or shearing off. The clamping effect between wheel and axel flange has more to do with the wheel staying on. If it slips, gone. A 6D common nail has about a 2000 lb shear force, I would think the 1/2 stud would be stronger.

[Dan Fahey]

Thought that Moser Studs were higher quality than Stock Studs.
Hence tightening to 110# for better clamping force.
Plus advice from another racer that did the same.

When the left wheel came off the Studs were supposed to be at 85#.
From Coleydogs post....Breaking or Shearing?
They look like they broke, one had fallen out without me knowing it.
Plus did not check them in a couple months, which I do now often !!!!!!!
So that would indicate they were loose. Correct?

Bought new Studs and Axles from Moser as the Splines were even bent.

Adding one more experience.
After installing the new axles and studs they were Clamped to 85#.
At the track checked them and they were loose and reset them to 85#.

Made a few Q runs and they were loose again.
This time clamped them to 110#.
Checked after the race they were at 110#

This last week pulled all the wheels off and examined the.
Discovered some of the Steel Washers were deformed.
Cleaned the surface of the holes in the wheels and replaced all the Washers and few Lug Nuts.
Never had Steel Washers deform like these did.

Going to contact ARP to learn what Steel Washers they have.
Think I need a better quality.

Are Studs from ARP, Moser and others are made by different Manufacturers?

Dan

[Travis Miller]

Not that it applies in this case but I'm just saying that over my years of working drag racing I have found that when I've been called to the starting line to look at broken wheel studs, a lot of times there is a wheel spacer involved.