Trying to repair this without drilling...but that is last resort.
Hopefully removing the interior panels is worth it for PDR being able to access the ding. After sticking his tool thing down in the the panel He mentioned that down in there it's double-walled. Hmmm. Wish I had the E88 sheetmetal diagram or something that shows the integrity of an E88...
1988 325i sedan (Cirrus Blue Metallic, Silver Grey Leather)
2011 128i convertible (Blue Water Metallic, Grey Leather)
2013 320i sedan Sapphire Black Metallic, Black/Black