wheel and tire set ups for preformance not looks

[Pinion]

so much on here, not actual set up sticky and tech specs or recommendations. I have researched till my head hurts on what is a good set up for my car. looking at quite a volley between square vs staggered, 17" vs 18" ect. It would be great if we had a section that has actual tech specs on what set up works and what mods need to be done to fit " X Y and Z" wheel set ups. If there is one and I missed it, can some one direct me please, and not what wheel fits my car. I know what wheel fits my car, just interested in optimizing my set up.