Bolts for adapters. Need some help!

[mother_russia]

Got some bbs rs rims, with the bolt pattern of 5x130. Decided to buy some adapters for them. I'm looking for some bolts. I need a set of 20 that will fit into these adapters.

http://www.racelandus.com/wheel-adapters/vw-to-porsche-wheel-adapters.html

The bolts that they come with, they fit right into the hub. What I need are the bolts that fit into the adapters. My bolts that came off of my e30 don't fit into the adapters because their thread is too small. I need some bigger bolts, width wise, not length.
Also, what should the length be of these bolts? If the adapters are 20mm, and the metal that holds the rim in place is about another 5mm, should I get some bolts that are about 20mm long? How would I figure this out?

[lambo]

I would contact raceland as they have all the thread specs and such. They should be able to tell you what's up.

fwiw, I would have gone with Adaptec adapters even though they are much more expensive...

[mother_russia]

fwiw, I would have gone with Adaptec adapters even though they are much more expensive...

Why's that?

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[e30trooper]

Dude , goto any autoparts store and buy 20 lugs in the Porsche size. Or any tire shop might have them. Dont be lazy.

[mother_russia]

Dude , goto any autoparts store and buy 20 lugs in the Porsche size. Or any tire shop might have them. Dont be lazy.

I would just go to any tire shop. That's not the problem. I just don't know if all the bolts on Porsches are the same or not.
How do you know if a Porsche from the 1980s has the same bolts as the ones from 2000?