They look like chrome plated Style 334s to me...
OE size was 9x19 square and took 225 50 19" tires.

Handy wheel spotting guide:
Felgen-Katalog - BMW-Treff - der Treffpunkt für alle BMW-Fans und -Fahrer

No idea if they are chrome plated OEs or aftermkt.
GL, mD

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