What "size" are the wheel studs?

[donk_316]

regarding a 94 grand am gt. what is the "size" of the wheel stud. I need to know what ARP stud / bolt is the correct one.

Thanks.

[jayhawk]

12mm 1.5 mm pitch.

[donk_316]

Hey thanks... do you know the stock knurl diameter / length also? The overall length too please...

I guess it obvious i dont have it infront of me...lol

[jayhawk]

Go to a good auto parts store and ask to see a wheel stud for you car, then measure. :)

[donk_316]

Originally posted by jayhawk
Go to a good auto parts store and ask to see a wheel stud for you car, then measure. :)

I know thats easier said then done. I work 14 hours from civilization and I dont even own a grand am. I need the size of the wheel stud to run them in my corvette brakes on a fiero.

So, thats why I came here. hoping someone had replaced their studs with some ARP units. Id rather buy ARP than over pay for GM. in order to get ARP i need to know the sizes.

[tenspeed]

Try www.rockauto.com

They have a good data base for cross reference.

[donk_316]

i tried that. Rockauto.com is a very good site. I have bought off them before.

but they didnt have any more info than the thread size.

[sunrunner_pei]

Ya know, in the 6.5 years I've been running this site, no one has ever asked this question. I just wish I knew the answer for you. :)

[donk_316]

Well when and if i find out. ill be sure to bring the info back to share it then!

[tenspeed]

I'm thinking that the knurls and the length are pretty much standard. It doesn't make much sense to make the knurls different and the lugs are usually open ended. Even closed ended lug nuts fit over standard studs.

The only exception would be the studs found on trucks where everything is over sized.

It's not a definite answer but the worst that can happen is that you spend ~$20 on studs that don't work. At least you'll know what not to buy again.

I tried to measure the studs that I removed from my last wheel bearing replacement but they are lost somewhere in the garage.