Here's the Blender File: DOWNLOAD BLEND FILE
and a picture:
Hi Christian,
I am not this far yet in this Course, but your UV Unwrap looks very messy and is probably the cause of that 'weirdness' of the rubber strip.
OK thank you for the quick answer, I'll watch the uv unwrapping video again, maybe I forgot a step.
Also check your faces, you may have some flipped normals there.
Hey pohrerhub,To fix the line:
Let me know if it worked :)