Anyone know of ab OEM source for longer wheel studs for a '90 Miata? I don't want to spend $100 on longer ARP studs for my $700 car, but would like to get some longer studs so I can run some small spacers (the OEM studs only have about 1 thread exposed past the lug nuts with the OEM wheels).
I seem to remember some Camaros have the same wheel stud geometry. I also have read that the Mazda MPV has studs that will work, but they're only ~1/8 longer. Anyone know of another OEM stud that's longer than the MPV ones which will fit?
Thanks!
I thought 2nd gen RX7 studs are the same?
The fronts on an RX7 are longer than the rears.
I picked up some longer studs from Jegs for the front of our RX7.
Rob R.
There is a thread regarding hub failure on miataturbo.net right now in the Race Prep section.
Someone was mentioning F-body studs or something as being ARP, a bit longer, and for some reason, much cheaper than "Miata" specific studs.
Looks like the front FC RX-7 studs might work pretty well for me. I'll try to find a set locally.
I'll order a set of the F-body ARP studs next season. If I get the 2.5" length the total cost would only be around $50 shipped.
Thanks guys.
For my Radical Prosport I measured the hole and knurl and spent some time looking through Summit and Speedway Motors.
I found nice quality stuff for about $50 for 20 parts w/ new nuts.
Keep in mind that the 1.6 cars use different studs than the 1.8. I think they're the same on all four wheels on the 1.6 cars, but the rears are bigger on a 1.8. Double-check that.
And yes, the F-body ones will fit. Drops the price of ARPs down considerably 
Keith Tanner wrote:
Keep in mind that the 1.6 cars use different studs than the 1.8. I think they're the same on all four wheels on the 1.6 cars, but the rears are bigger on a 1.8. Double-check that.
This is correct as far as I can tell.
Keith Tanner wrote:
Keep in mind that the 1.6 cars use different studs than the 1.8. I think they're the same on all four wheels on the 1.6 cars, but the rears are bigger on a 1.8. Double-check that.
And yes, the F-body ones will fit. Drops the price of ARPs down considerably
IIRC, it's the 1.6 that are different front to rear.
I think the fronts are the same as the 1.8s, but the rears are different.........I'd need to find my receipts. Or vise versa. But I'm 99% positive it's the 1.6 cars that are different front to rear.
I've read in a number of places that it's the early cars that are the same all around and later they switched to a larger knurled diameter in the rear. Some say the switch occurred in '92 some say with the 1.8 upgrade.
when i consider replacing wheel studs, i always put "cheap" at the top of my attribute list. 
JohnyHachi6 wrote:
I've read in a number of places that it's the early cars that are the same all around and later they switched to a larger knurled diameter in the rear. Some say the switch occurred in '92 some say with the 1.8 upgrade.
You are correct, I obviously did not remember correctly. 
When I bought spacers, they came with longer wheel studs.
H&R ? I forget.
Can somebody tell me the length and knurl info for the f body studs? What year f body?
Dragging this one up as I am in need. I looked at the F-body studs, and they don't have the little "nipple" at the tip that the miata-specific ones do. Does that matter?
F-Body 100-778: 
Miata: 
i wouldn't go cheap on things that hold wheels on to cars....
Teh E36 M3 wrote:
Dragging this one up as I am in need. I looked at the F-body studs, and they don't have the little "nipple" at the tip that the miata-specific ones do. Does that matter?
The bump at the end is designed to make lugnuts less likely to cross-thread. Important if you're road racing with tire changing pitstops, but for general purpose use it's just a convenience.
As for "cheap" and wheel studs -- clearly this isn't a place to skimp on quality, but anything OEM spec off a much heavier car (like an F-body) that's the right size ought to work just fine.
They're not "cheap", they're still quality ARP studs. They're just from a car with higher production numbers so they're made in higher quantities. Same quality of stud.
codrus wrote:
Teh E36 M3 wrote:
Dragging this one up as I am in need. I looked at the F-body studs, and they don't have the little "nipple" at the tip that the miata-specific ones do. Does that matter?
The bump at the end is designed to make lugnuts less likely to cross-thread. Important if you're road racing with tire changing pitstops, but for general purpose use it's just a convenience.
As for "cheap" and wheel studs -- clearly this isn't a place to skimp on quality, but anything OEM spec off a much heavier car (like an F-body) that's the right size ought to work just fine.
Thanks! Given that this is the core of the reason I'll have to replace them in the first place, I'm considering getting the "nippled" version. Also I like the way it sounds. Is there any cheaper car anyone knows of that would have the nippled version? Also, why does anyone want longer studs? Does it make mounting wheels easier/faster?
Teh E36 M3 wrote:
Also, why does anyone want longer studs? Does it make mounting wheels easier/faster?
Longer studs let you put more stuff between the lugnut and the hub without running out threads. Spacers are the obvious example, but 2-piece rotors with aluminum hats sometimes require a thicker hat portion than iron ones.
C'mon- you going to ruin this for me? Bullet nose = 
Codrus- thanks. I have only about 3/16" clearance (if that) outside the wheels, so longer need not be a priority. This is an engine/suspension swapped MG Midget. Fresh on the road after 6+ months in charlie status, minus one wheel stud.
codrus wrote:
Teh E36 M3 wrote:
Also, why does anyone want longer studs? Does it make mounting wheels easier/faster?
Longer studs let you put more stuff between the lugnut and the hub without running out threads. Spacers are the obvious example, but 2-piece rotors with aluminum hats sometimes require a thicker hat portion than iron ones.
also, they make the car look more like a race car...
Teh E36 M3 wrote:
C'mon- you going to ruin this for me? Bullet nose =
Codrus- thanks. I have only about 3/16" clearance (if that) outside the wheels, so longer need not be a priority. This is an engine/suspension swapped MG Midget. Fresh on the road after 6+ months in charlie status, minus one wheel stud.
Drop me a line if you just want one of the studs, they usually sell in packs of five. Or you can get single OE-length/quality ones at your local auto parts store.
