The E46 M3 seems to be the perfect height, to scrape the bottom of the front bumper. And lower, and you would just hit it the parking lot divider. Any higher, and you be over it.
I am sure BMW engineers spent MONTHS, traveling around the US measuring parking lot dividers to properly engineer this car to do this.
'95 Alpine M3 LTW
'00 Dakar M Roadster
'02 Topaz M3
Red/White SRF #4 (Chassis 561)