The results may shock you.
Ceramic coating scratch test.
The test is repeated to make sure that the result is repeatable.
If the pencil scratches the surface of the coating then a softer pencil is used until we acquire the first pencil that doesn t scratch the coating.
After 6 months of not washing my ceramic coated m3 i decided to compare it to my porsche 911 that was ceramic coated 2 weeks ago.
A pencil is selected and a line about 1 2 inch long is made.