From: Doug Miller on Tue, Jul 23, 1996
Longer Wheel Studs
Well, in case anyone ever needs longer wheel studs for their Z, I have
done the needed research for you :-)). The ONLY place to get longer studs
with the right thread and knurl is from Nissan Motorsports (or whoever may
act as a distributor for them, e.g. Motorsport Auto). The only drawback
is the price - $8 a piece!!
For the cheapskates (e.g. me!), I found a reasonable alternative. The studs
from 86-92 Mazda RX7 are 52mm long (i.e. 10mm longer than the longest Z/ZX
stud), and have a 12.9mm knurl diameter, slightly bigger than Z's 12.8mm
knurl. I pressed them into the original hole without problems. Since they
are the same diameter (12mm), there is no need to remachine hubs, rotors,
wheels, etc. HOWEVER, they are 1.5mm pitch, while the Z has a 1.25mm pitch,
so new lug nuts would be required. Anyway, at $1.30 per stud, this was a
bargain.
Leon Gurevich 77 280Z w/350 Chevy