1. Bimmer
Good stories and great reading for those who want to know how their BMWs really work(or how to fix it if it doesn't).
2. Total BMW
Good reporting about the ownership aspects. Silly stories about BMWs with o much make-up on.
3. BMW CAR
Good reporting. Could be the best if they hired someone to write about the technical aspects of owning a BMW.
Re:Ferrari magazines
Cavallino was a great magazine in the early 90's. We have not been able to get it in Sweden since then but it still exists, I don't know if it's still good.
I think there are two more called Forza and Ferrari World.