Camber Question

I only have a normal M3, but thought I'd ask this question on here as you guys a more track oriented that people on normal M3 forums.

I've done a search and it seems many of you have messed around with various settings.

What would you guys consider to be the best front camber setting as a good compromise between road and track?

I realise you could adjust it specifically for the track, but lets assume I don't want that hassle just yet.

I was thinking at least -2.0°, but would -2.5° be too much for road use?
(And for that matter, is -2.5° enough to give reasonable tyre wear on track?)

Thanks in advance, and sorry for starting another geometry thread.