The most out of this world obnoxious cut-off artists in my area INVARIABLY drive the BMW 300 series. Youngish, too many hormones circulating for good driving behavior, they have something to prove on the road and that Beemer is the same size as their ego. If they can get a car length ahead of you, they have won the most important battle of their day.
Guys at my company that are top level execs drive the 700 series. They drive carefully and politely, with nothing to prove.
I'm not sure about the 500 series owners yet. But a 300, I give them lots of room.
I think you mean 3, 5 and 7 series......
One of our biggest problems (other than idiot drivers) around here is it appears most Japanese and all but a very few European cars aren't imported with turn indicators. Then there are the left lane campers....... Sometimes I wish I drove a Dodge PowerWagon like in the old TV series Simon and Simon! Nothing like a 4X6 for a bumper!!!!