I have a set of style 124 BMW # 6760617 wheels from my old car (brand new). I just bought a 2011 528i with the sport package
It has 18" x 8" wheels with 30mm offsets front & back now. The style 124/6760617 are: FRONT - 18" x 8" with a 20mm offset
& REAR - 18" x 9" with a 32mm offset. I would love to use these wheels for my summer performance tires. Can I use them without any
performance or clearance issues? Otherwise I will need to spend $1500 - $2000 to get a new BMW OEM set.

My F10 winters are 8 x 18" and the ET is 30 both front and rear, tires are 245/45 18".

http://felgenkatalog.auto-treff.com/

The 19" Style OEM 331 wheels ET's are F 33 and R 44 as they are on my 20" OEM 312's also.
That means that the ultimate ET's for F10 wheels are for a front 8,5 wheel and 245 tire ET28
and for a rear 9" wheel and 275 tire ET29.

I did the math, now it is your turn!

Thank You for the response & information. I assume that you are happy with the performance of your 20" summer wheel package
with the larger offsets (F=33 R=44)? Probably gained significantly in cornering/handling & power/traction to the road?
Are there any BMW OEM wheels that are the "ultimate" (F=8.5" x 18" ET28, R=9.0 x 18" ET29)wheels for the F10? I love my new
car, just hate the Continental ContiSport3 Run Flats!

The OEM 19" and 20" wheels are F ET33 and R ET44. They are made for the F10 by the factory, so I believe in them.
And yes, they are a very good choice for me, I don't like any shaking, trembling or nothing like that on my fine F10.

I also love my Michelin X-Ice x12 non-RF 245/45 18" OEM 18? V-Spoke 328 Wheels.

Ah the X-Ice is a serious winter tire. Were I in Finland, that would be my winter tire.

It should also be in Canada and up states US, like northern NY.