If you want to be very precise , have a look at this . It's interesting anyway
https://uk.video.search.yahoo.com/se...e7&action=view
I have read before that up to some 30 mm rotational movement at the perimeter of the flywheel is acceptable on our cars
Possibly that equates to about the 14 deg measured on the video ; you'd need to measure the diameter of the centre mass and convert deg to mm