My 530 has covered 19k with an average of 46.9 ( obc) mixed driving.
i came from an M5 so wanted the bigger engine.
Its a dream , quick, quiet , smooth and economical . Get the 530 you will not be disappointed.
Did many a return trip NE of England to Aberdeen last winter in G30 on original tyres without issue, been doing same journey over 10 years in a variety of 2 wheel drive BMW’s including M5 without issue.