Theptheezy

Hey guys theezy here and I'm in the market for new rims in the next couple of months,
I'm really leaning towards the 20" silver miro 111's it seems like everyone is satisfied with those plus they are same weight as stock? But i need help choosing the right tire sizes. I've done a (little) research on it and I think 245/30/20 in the front and 275/25/20 in the back?
i have a 07 550i with sport package so idk if 285 in the back would rub...

i also like the 19" mrr gf7 but i'd rather have 20's so idk...

what do you guys think out of the two? and if anyone has those rims on their car can yall post pics please? i'm hoping to get a good deal on new years, if not, hopefully i have enough money saved up by then to buy em full price lol

and if yall recommend any sites to buy em from because as of right now im looking at wheelfire.com for the mrr gf7's and modbargains.com for the miro 111's

thanks for looking! hope to hear from yall soon.