コペンホイールスペーサー取付 何ミリまでOK？

Many people change the wheels on their Copen to 5.5J, and while the front wheels fit perfectly, the rear wheels end up slightly recessed, preventing a flush fit. Therefore, you might consider installing spacers, but I tried to find out how many millimeters of spacer adjustment is acceptable by actually testing how many turns the bolts would turn. I hope this is helpful. Thank you.