Wheel Studs
Thread Starter
Le Mans Master
Joined: Oct 2007
Posts: 9,660
Likes: 3,362
From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11
Wheel Studs
I am looking for some new wheel studs that are about 1/2 inch longer than stock. Does anyone know what the thread pitch and knurl dia. of a stock stud are?
Thanks.
P.S> If anyone has gotten some they would recommend please share...
Thanks.
P.S> If anyone has gotten some they would recommend please share...
Thread Starter
Le Mans Master
Joined: Oct 2007
Posts: 9,660
Likes: 3,362
From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11
Thanks. I have chrome lug nuts that have a closed end. I dont know if these will fit. Maybe if I cut the non threaded part off those studs.... 
Team Owner
Joined: Sep 2003
Posts: 25,331
Likes: 2,722
Just curious!
Why just 1/2"?
Your profile shoes a '90 car and there would be few instances where you might want to do spacers. Measure the exposed length of the threads of yours and post that and I'll give you a couple of options. You could trim the ones that are part#'d for you (22551491) and they're the longer studs by GM but if you actually only need 1/2" more than you've got let's see what you've got!
Do the studs on your car have the "dog point" like those in the snapshot but shorter or NO "dog point"!
Why just 1/2"?
Your profile shoes a '90 car and there would be few instances where you might want to do spacers. Measure the exposed length of the threads of yours and post that and I'll give you a couple of options. You could trim the ones that are part#'d for you (22551491) and they're the longer studs by GM but if you actually only need 1/2" more than you've got let's see what you've got!
Do the studs on your car have the "dog point" like those in the snapshot but shorter or NO "dog point"!
Thread Starter
Le Mans Master
Joined: Oct 2007
Posts: 9,660
Likes: 3,362
From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11
Just curious!
Why just 1/2"?
Your profile shoes a '90 car and there would be few instances where you might want to do spacers. Measure the exposed length of the threads of yours and post that and I'll give you a couple of options. You could trim the ones that are part#'d for you (22551491) and they're the longer studs by GM but if you actually only need 1/2" more than you've got let's see what you've got!
Do the studs on your car have the "dog point" like those in the snapshot but shorter or NO "dog point"!
Why just 1/2"?
Your profile shoes a '90 car and there would be few instances where you might want to do spacers. Measure the exposed length of the threads of yours and post that and I'll give you a couple of options. You could trim the ones that are part#'d for you (22551491) and they're the longer studs by GM but if you actually only need 1/2" more than you've got let's see what you've got!
Do the studs on your car have the "dog point" like those in the snapshot but shorter or NO "dog point"!
Thread Starter
Le Mans Master
Joined: Oct 2007
Posts: 9,660
Likes: 3,362
From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11
I think I may have found some on summit. The thread is 12mmX1.5 right? What is th underhead length they refer too???
http://store.summitracing.com/partde...5&autoview=sku
I think these are the ones I want but they might be too long...
http://store.summitracing.com/partde...5&autoview=sku
I think these are the ones I want but they might be too long...
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Underhead length is the distance from under the head of the bolt to the end of the stud. Regular hex cap screws are measured in the same way.
Have you thought about getting new acorn style lug nuts that are longer? Gorilla and McGard have lugnuts that are longer and that would solve the stud length problem.
Do you use the acorn nuts for racing? Some associations want to see the stud with the wheels on the car so acorn nuts could not be used in a situation like that.
I use standard open ended lug nuts on my 87 and I can get at least 9 turns on the OEM studs with my ZR-1 style wheels that have a 38mm offset.
Have you thought about getting new acorn style lug nuts that are longer? Gorilla and McGard have lugnuts that are longer and that would solve the stud length problem.
Do you use the acorn nuts for racing? Some associations want to see the stud with the wheels on the car so acorn nuts could not be used in a situation like that.
I use standard open ended lug nuts on my 87 and I can get at least 9 turns on the OEM studs with my ZR-1 style wheels that have a 38mm offset.
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Thread Starter
Le Mans Master
Joined: Oct 2007
Posts: 9,660
Likes: 3,362
From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11
Underhead length is the distance from under the head of the bolt to the end of the stud. Regular hex cap screws are measured in the same way.
Have you thought about getting new acorn style lug nuts that are longer? Gorilla and McGard have lugnuts that are longer and that would solve the stud length problem.
Do you use the acorn nuts for racing? Some associations want to see the stud with the wheels on the car so acorn nuts could not be used in a situation like that.
I use standard open ended lug nuts on my 87 and I can get at least 9 turns on the OEM studs with my ZR-1 style wheels that have a 38mm offset.
Have you thought about getting new acorn style lug nuts that are longer? Gorilla and McGard have lugnuts that are longer and that would solve the stud length problem.
Do you use the acorn nuts for racing? Some associations want to see the stud with the wheels on the car so acorn nuts could not be used in a situation like that.
I use standard open ended lug nuts on my 87 and I can get at least 9 turns on the OEM studs with my ZR-1 style wheels that have a 38mm offset.
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
If you want some high-strength studs, get ones that are the same length as stock and use open-end nuts for the race wheels.
Some associations don't like the use of spacers for racing or HPDE/track days so you should probably check out what the tech people say about using them. Spacers will put the load of the wheel and the cornering forces that much further out on the studs. Going to a high-strength stud helps, but you still have the load further out there.
Thread Starter
Le Mans Master
Joined: Oct 2007
Posts: 9,660
Likes: 3,362
From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11
I cannot seem to find any high strength ones that are the stock 1.625" length. Would it be ok to trim the high strength ARP ones?
Thread Starter
Le Mans Master
Joined: Oct 2007
Posts: 9,660
Likes: 3,362
From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11
I have decided to go with the ARP ones and open end lug nuts. However I need new ones but cannot find the GM part number for them. DOes anyone have them?
Thanks
Thanks
