In the BMW enthusiast circles, bimmer is a BMW car and beemer is a BMW motorcycle.
Back in the early 80's my everyday driver was a gray market Hartge BMW 323i back in the early 80's with 4.10's & nitrous. That little car would run 4.5 sec. 0-60 and mid 12's in the 1/4 and was a blast on a road race course.