I plan to purchase KW v1 coilovers for my G37 Coupe, and was wondering if the front camber kit necessary? I don't plan to slam it, but do want to cover the gap completely. In what instances are those arms necessary?
I only have experience with Hondas and their suspension, which never required a front adjustment even when slamming (2010 Accord Coupe).

Appreciate your feedback.

 

A front camber kit is only required if the drop is so low that its out of spec. How low us that? There's no exact magic number. Probably somewhere in the neighborhood of 1.25" if I had to estimate.

 

Sounds about right, something like 1.25-1.5" drop is the line where camber gets out of range.
OP, if you want zero gap you will be right in that gray area.