The ones I looked at in the store didn't have any serious rubber on the bottom. My thing is, any hard surface on your car has the potential to scratch. The guy said that if it is installed properly, it shouldn't scratch because the magnet is very strong. HOWEVER, the key word was SHOULDN'T, not WOULDN'T. Huge difference, in my eyes.
Hey ROOZ, I have a question for you. How is your signal w/it on the dash? I had asked the guy about that and he said it would be hit and miss. 50/50. He also tried to explain that a good reason for the lousy reception is the very fine ultraviolet tint in the glass.
Thanks in advance.