AutoCross Tire Width

[67 Camaro]

Hey Guys,

As my build progresses I find myself wanting to compete more and more in autocross when I'm done. Thus I'm at the cross roads, I am not entirely sure weather WIDER is nesscesarily better. I originally wanted 19 x 10's with a nice low profile tire. I now find that I really don't know much about how width really affects cornering. I am steeping back from the idea of mini tubbing (a step back in the build b/c I already have a 4 link system installed) and considering something like 18 or 17 x 8 or 9's... any insight as to the applicability of tires dimensions v.s. their application would be a great help.

Thanks