Extended Studs and Spacer ?

Kmccarthy714 · 03-17-2014, 01:01 PM

Quote:

Originally Posted by nismosis

You can get ARP extended studs which are about 25mm longer than stock. It depends on your wheels, as some wheels by design are thicker at the hub depending on the offset you order. Then add that to your spacer thickness. My rule of thumb as an engineer is 1.5D thread engagement with an absolute miniumum of 1D on critical bolted joints. That's 1.5 or 1.0 x Stud Diameter. Our studs are 12mm so that equates to 18mm or 12mm min.

So you think 25 studs should be good? Or could/should i go a little shorter?

nismosis · 03-17-2014, 02:04 PM

Quote:

Originally Posted by Kmccarthy714

So you think 25 studs should be good? Or could/should i go a little shorter?

+25mm studs should be more than adequate for your application. However, they may be too long to run short closed end lug nuts...you'd probably have to get some 40-50mm deep lugs nuts, which you want anyways for aftermarket wheels IMO. You'll have to test fit your setup and see where the stock studs get to, if they even reach at all. Besides the +25 ARP studs, I don't know what else is out there, or at least something reputable.

There is a good DIY on here for the installation of extended studs, ARP's in particular. I also did it recently if you have any questions. The rears are more of pain than fronts since you have to take the hubs off.

Kmccarthy714 · 03-17-2014, 03:59 PM

Quote:

Originally Posted by nismosis

+25mm studs should be more than adequate for your application. However, they may be too long to run short closed end lug nuts...you'd probably have to get some 40-50mm deep lugs nuts, which you want anyways for aftermarket wheels IMO. You'll have to test fit your setup and see where the stock studs get to, if they even reach at all. Besides the +25 ARP studs, I don't know what else is out there, or at least something reputable.

There is a good DIY on here for the installation of extended studs, ARP's in particular. I also did it recently if you have any questions. The rears are more of pain than fronts since you have to take the hubs off.

True test fit is probably best I have extended lugs currently so thats not a problem. What's the consensus on the spacer/extended lug that just attaches to the existing studs? Why.dont more people use them to avoid the install headache especially in the rear?

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