7R wheel stud length and spacer width question

[bxd]

Can someone please tell me what length wheel studs I'll need to mount 7R wheels on my 69T? 88mm? 100mm?

thank you

[a911s]

Stock stud length is 45mm. Spacer needed to clear reasonable tire on R wheel in rear is 12-17mm (depends on tire and car). So 63 mm stud should do it.

[bxd]

hmm, yeah, that brings-up a good point... tire size. I'm thinking that a 225x50/15 is the way to go with rear 7R setup... tires of a specific size vary by maker, so maybe a recommendation here too would be great. I'm running B.F. Goodrich 205x60/15s up front.

(thanks, Randy)

[Harvey Weidman]

66mm are usually easy to find. They do reqiure an open lug.

I usually don't go beyond 15mm (LWB) unless the car is decambered and not too low. or has track size bars.
Then, I have used as Randy says; up to 17mm and one car had clearance for more. (Precision fender making)

We start at 12 and go out a little at a time because of fender/susp differences.
At 12 they (225/50s)are frequently very close to the alignment bolt.
Your fronts will be taller unless you use 205/55s.
H

[Harvey Weidman]

Although you didn't ask; I recommend the 15mm bolt to bolt adapters (the smallest made). They will fit with 225/50s (LWB) and you can use closed lugs ...and they are easily removable to go back to stock.
H

[bxd]

Thank you, Harvey! I don't know where to get the correct 15mm bolt-to-bolt adapters... any recommended suppliers?

[uptheorg]

Thank you, Harvey! I don't know where to get the correct 15mm bolt-to-bolt adapters... any recommended suppliers?

good vendor here:

http://www.boothedesign.com/spacers.html

[sithot]

Although you didn't ask; I recommend the 15mm bolt to bolt adapters (the smallest made). They will fit with 225/50s (LWB) and you can use closed lugs ...and they are easily removable to go back to stock.
H

I like the ones you sold me Harvey. Easy to install and work like a charm. No stud changing and I can swap wheels quickly.

Tom

[Harvey Weidman]

good vendor here:

http://www.boothedesign.com/spacers.html

Be patient with Ralph. He is getting old...older than me and he lost his wife a while ago.
Not shure how long another Porsche supplier will hold on....
H

[sithot]

Here is the sequence on my '67 coupe. The wheels are restored 7R's that Harvey did. Pay no attention to the rusty head pipe. It's all shiny-licious now with SSI's.


Tom