Help with stud length

[e30slidewayz]

I'm looking to run 15mm spacers on all four corners and I need to know an appropriate stud length to run my wheels with. I'm running 2 piece style 5's and I want the center caps to fit but also have enough stud to safely grab the lug nut.

I have a stud conversion already, but I'm not sure of the thread depth of the hub, so I have no idea how long they are. I currently have 10mm spacers up front and the lug nuts are barely grabbing the stud... kinda sketchy. The rear lug nuts are fine with no spacers. I figure I could just add 15 mm to the stud length I already have, but again, no idea how long they are. Anyways, could anyone help a brother out? Need to order these ASAP. Thanks in advance.

Edit: with my current studs, there's approximately 36mm of stud sticking out of the hub

[lambo]

From Motorsport Hardware's website:

Motorsport Hardware - Wheel Stud Kits

44mm studs will fit up to a 5mm spacer -57mm studs will fit up to a 12mm spacer

80mm studs will fit up to a 20mm spacer

75mm Bullet nose studs will fit up to a 12mm spacer -90mm Bullet nose studs will fit up to a 20mm spacer

Hope that helps!

[e30slidewayz]

Thanks, called up motorsport hardware and got the 80mm kit... hope my centercaps still fit. Guess I could grind them down if not

[MR 325]

80mm should be perfect with the spacers, caps will fit no problem.

Motorsport Hardware rocks.