How long before Flat Spots develop ?
I've fitted some 4" high Rubber Stops to reverse up to as my garage is barely 8" longer than my 987 . . . and a lower 1 1/2" high rubber strip in front of the wheel to stop it running forward . . . So there is a "Cradle" effect but with flat concrete in between them.
I don't plan to leave the car idle for too long, but would be interested to know how long before Flat spots develop please ?