I've finally ordered some coilovers. I went for the Weitec Hicon GT's. Now I think i've decided what wheels I want - Brock B2's. Can't afford them until next month but just been looking at the sizes they come in and I can see you can get 8.5 x 18 and 10 x 18. First of all, is 10" going to be too wide as in illegal? As I was thinking 10" on the rear and 8.5" on the fronts. I guess that could mess up the handling also..?
If this is a bad idea i'll probably go for 8.5" all round. I don't think i'll need spacers with Brock's will I as they're already wide enough? 
I think I read that you don't need adapters with these either, but can someone confirm please.
Cheers for any advice with this!