But no worries, I'm a car addict in general, not only a BMW fanboy.
I'll give Audi(Auto Union) some credit:
The 1937 type C. The Bergrennwagen had double tyres(not this one in the picture) on each sides of the rearaxle to get more traction. They couldn't produce broader/wider (slick)tyres yet.
A 45 degree V16(!!!), 520BHP and weighing about 750kgs(as I recall) and off course rearwheeldrive and way before Ferrari a mid engine(!!!!). One of my favourite Grand Prix cars.