Extended Wheel Stud Information

[Milkman20]

After some research I came across a compilation of the various wheel studs that will work on our cars. This info came from a G8 forum but the studs are the same.

In the interest of research, I've gathered up 3 possible wheel studs that could be used in place of the OE studs to provide greater thread "reach", in the event someone has a wheel/spacer combination calling for more threads to provide adequate wheel lug nut thread contact (compared to stock studs).

The picture shows five studs in order, left to right:


OE 11588811 - underhead to end of threads ~1.75"
Dorman 610-490 - underhead to end of threads ~2.5" or 63.5mm (69.7mm to end of stud)
Dorman 610-509 - underhead to end of threads ~2.7" or 68.6mm (73.4mm to end of stud)
Dorman 610-530 - underhead to end of threads ~2.92" or 74.2mm (78 mm to end of stud)
OE 9598542 - same as 11588811

The knurl diameters on the 3 Dorman studs are all within .004" of the OE stud (to the larger side) so there should be little concern about any of them properly fitting a PPV hub flange.

Cost is an interesting study--using Rock Auto information, the cost of each Dorman stud is:

610-490: $5.67/10 ($5.89 individually)
610-509: $4.00
610-530: $1.53

All 3 Dorman studs are priced the same at O'Reilly Auto Parts - $4.99 each

Of note, in comparing the dimensions, it does appear that the 610-490 stud, which provides an additional 3/4" (19mm) of thread length over the stock stud and SHOULD be more than adequate for nearly any spacer setup imaginable--it should fit in place of an OE stud with no issues as far as shoulder length and/or interference with the brake rotor stud hole sizing.

Hopefully this helps! Mods feel free to move this if necessary.

[Milkman20]

Guess I'm the only one that found this useful! haha

[blazzin1]

No, it's useful. but I think most guys here are just running thin spacers for the most part, like maybe 1/4" or so. Some of those studs above are very long, but certainly useful in special applications. But for most people, who don't need the super-long studs, there is better alternative.....

OEM (11588811) = Dorman Equivalent (610-434)

GM (1/4" longer, 11588810) = Dorman Equivalent (610-428)

As seen here: http://ls1tech.com/forums/cadillac-c...lac-cts-v.html

Just more info for the masses.....

[SS_TINHO]

this just saved me! Thanks for posting this!! Have you used any of these? im running a 15mm spacer wonder which would work better

[Jenner]

Exactly what I've been looking for

[Destructo09]

Those long ones will likely require removal of the hub at least in the front to get them in. The truck studs will barely go in if you do some light grinding of the knuckle for a few more mm of clearance.

[Jenner]

I think I'm gonna go with the one right next to the OEM one

[BruHop]

I will try the 11588810 with a 7mm spacer. Now, where to get a 7mm spacer.....

[Jenner]

Originally Posted by BruHop

I will try the 11588810 with a 7mm spacer. Now, where to get a 7mm spacer.....

did you meant the 1158811? That's the stock size

[BruHop]

Originally Posted by Jenner

did you meant the 1158811? That's the stock size

Yep. Fat finger typo.
Now, help the 7mm spacer???

[Jenner]

Originally Posted by BruHop

Yep. Fat finger typo.
Now, help the 7mm spacer???

That part number is the same size as the stud you have now.

As for the spacer, you might find something here.

http://www.ebay.com/sch/i.html?_nkw=...sPageName=GSTL

[BruHop]

You're right I fouled up. The one I originally stated 11588810 is 65 mm long. The stock ones 111588811 are 58 mm long. Both GM parts.

[BruHop]

Originally Posted by Jenner

That part number is the same size as the stud you have now.

As for the spacer, you might find something here.

http://www.ebay.com/sch/i.html?_nkw=...sPageName=GSTL

Those are close. But our center bore is 66.7 mm. Very hard to find 7mm 5x120 hubcentric with 66.7 CB. I found 5mm on eBay that fit, but not 7mm.

[Jenner]

Oh I didn't think to check the bore size. I'll check again