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Discussion Starter #1
Whats the biggest size mm spacer that would be able to run with out extended studs?? O and still keep your wheel on the hub with out falling off. Basically whats the limit on spacer width and still be safe on the road?

I worded this terribly... :fp:
 

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I've always seen people saying not to use wider than a 5mm without extended studs.
 

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I wouldn't go bigger than 5mm. Extended studs are fairly cheap and not that hard to install for anything bigger.
 

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Discussion Starter #5
^^^This, anything more and you cannot safely get enough turns on a stud to hold securely.
Hmmmm... I should probably take my 8MMs off then and just buy some extended studs. How much of an additional length am I looking for?
 

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RDR
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this has come up before,
always depends on the thickness of the mounting face of the wheels, of course with a thinner face you can run a wider spacer since more threads will show.
for daily driving. i've driven on spacers with 6 complete turns on the lug nuts no problem.
 

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RDR
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lol that doesnt mean i know it off the top of my head, its not something manufactures list either.
figure it out yourself, use your own discretion and judgement. like i said, 6ish turns is fine.
 

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Discussion Starter #13
lol that doesnt mean i know it off the top of my head, its not something manufactures list either.
figure it out yourself, use your own discretion and judgement. like i said, 6ish turns is fine.
Will do. Thank you for the help!
 

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I mentioned this in another thread but if you run spacers with studs make sure you have the cut outs behind your wheels and make sure there deep .

If you plan on running spacers with the factory lugs and try to keep it hub centric good luck I wouldn't go wider then the 8 mm your running now . You can buy 10mm slip on's that are hubcentric but they usually cost more . If your in love with your wheels and are planning to keep them for a long time then just spend the extra money and have some custom spacers made with the studs and are both hubcentric to the miata and the wheel your running .
 

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There is not anything wrong with spaces. Slip on or bolt on. It all depends on the effort you put into it.

Hub centric is not necessary but will be a better option. As long as you check them and torque them and they are installed right you will be fine.

You get what You give. If you just throw a set on without checking and they bottom out the wheel to the factory stud and loosen it's not the spacers it's user error. Most of the time you hear of a failure it's not the spacers fault it's who ever installed them or didn't keep up on them. I check my wheels regularly.
 

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Just use ARP studs with open ended lugnuts, you can run up to a 20 to 25mm spacer i believe. I run a 15mm and have plenty of thread left.

Personally i wouldn't bother with the spacers with built in studs, especially if you track the car since thats two sets of lugs you'll need to check torque on.

Plus, ARP makes high quality parts. I've never had a problem and i've been tracking with ARP studs + spacers for years on many different cars, and i drive like a damn madman

General rule of thumb is you want 6-8 turns of thread engagement, the more the better obviously.
 

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How much extra of a length would I need to get for the ARP studs?
Don't really understand your question . Length of what the spacer? That is really up to you ,you could get away with a 15mm spacer on your stock studs . If you went with say 20mm i'd get the bolt on spacers . Right now i'm running 15mm bolt on adapters but i had to shave my studs down about 3-4mm but that was because the back of my wheels didn't have the cut outs as deep as they needed to be . Even with out the spacers i'm still able to get enough turns on the lug nut to hold the wheel on correctly .
 
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