X4M 2020 tires/suspension/spacers questions

[0Dwilliams11207]

Hi All,

New to the BMW world. I got a 2020 X4M competition. Looking to get some suggestions on wheels/tires, spacers as well as suspension.

I am looking to get bigger rear wheels,
I am also looking to increase wheel size. What size is best recommended? Or this will look best

I also saw someone with 15mm spacers, should I add spacers? Do I go 15mm or 12mm?

Lastly, I currently have stock suspension. But recently got catless downpipes, bm3 stage 2 93, and about to install new exhaust and front intakes as well as dyno tune. Should I get a new suspension set? If so, what is recommended/best? I would like to lower car as well

Again, new to car world but really started to enjoy my car lately and want to make some mods now warranty is up. Apologies for the dumb questions to the experts!