M5 345 Replica wheels

I am looking for a set of winter wheels to put on my '14 535 but would like to keep them for my '16 M5 when it arrives. I've gone round and round trying to decide the best solution. I also want to run a square setup. I have found these replica wheels but the offset scares me. I would buy a complete set of 19x8.5 with offset of 20. Would this work without spacers on my 535 and future M5?



http://ift.tt/10bO9Tg



The same company offers a 19x8.5 with offset of 35 but are back ordered.



Which would work best?



Thanks for any advice.