My 500 gucci has a poorly rear end [emoji23] after a few dry days I decided to wash my car...... I jet washed and polished but.... I’ve noticed on the rear bumper some sort of coating is coming off!!?!! My car is metallic white ... is it the metallic coating ? Anyone had a similar experience?? Possible repair ideas? I just saw a bumper for sale on eBay with what looks like a similar issue ...so I thought I’d ask!

