Lugbolts
You may be ok with your stock bolts because they where a bit too long for my Brabus rims. In fact, I had them shaved down by the installers (too desperate to put the rims on right away!).
There is a metal panel behind the rear brake rotors. If your lugnuts are too long, you will hear an annoying "clicking" sound that occurs when the wheels rotate. That's what happened to me with my stock lugnuts and Brabus rims (I don't have spacers on them).
Bottom line, try the stock lugnuts first with your rims/spacers. If you don't hear clicks, you're ok, but be sure that enough thread has gone through into the lug holes. Tip: put some nailpolish on the lug and tighten. The threads should go down at least the same width as the bolt (best guess, 1/2").
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