1989 BMW325ix 140k miles - With auto transmission in Park, car will roll slowly if parked on an incline. Rolls maybe 1 inch per minute (too slow to see unless you look at the edge of the tire) and does not seem to accelerate so there is some resistance to movement. I expected the Parking Pawl to lock the wheels but apparently it does not.

The transmission is very solid - no slipping at all when driving or shifting. I don't normally use the emergency brake so I'm afraid it will freeze if I apply it. I'm using a wheel chock until I figure this out.