10mm wheel spacer: 35mm or 40mm bolt?

[kyrix1st]

As you can see, my race prep-in-progress Z3 is in need of spacers.

I'm thinking of putting 15mm up front and 10mm in the rear.

Questions:

1. Is 82mm Turner stud enough for both front and rear?
2. If I were to put 10mm spacers all around, will 35mm wheel bolts (not studs) suffice?

Thank you!

[kyrix1st]

Just in case anyone else is wondering, I found this info on BW. Very useful for a spacer noob like myself

http://www.bimmerworld.com/Wheels-Tires/Studs-Lug-bolts/Extended-Length-Wheel-Bolts-M12.html