Rep Power: 0

My roommate and I have both noticed these faint circles (like the ones that cups leave on tables) on our back windows and we have tried washing them off and they are still there. I also can't get the lines off of my car from when I first got it (from the protective shipping tape).

Are we doing something wrong or are we just stupid?

 
Rep Power: 0

if its on the exterior/outside of the window you can try some 0000 fine cotton wool, just make sure the window is dry otherwise the **** will rust to the window. After you are done fully wash the car cause the thing sheds, and u dont want any pieces stuck to the car.

 
Rep Power: 381

Spray it with a glass cleaner....use steel wool on the window......wipe off with one rag....go over it again with a different dry rag, should do the trick.

 
Rep Power: 0

Those rings are from the suction cups they use at the factory to install the glass - they ARE a pain to get rid of. I have them too. I've been washing and washing and they are still there... I'm not sure I would use steel wool - let me know how it works...

 
Rep Power: 0

I'm not so sure that I wanna use steel wool on my window... or on my sunroof as I noticed those last night.

 
Rep Power: 304

Maybe some good quality glass polish like Grigots or Zaino?

 
Rep Power: 381

Don't use steel wool on the insides if you don't have factory tint, it'll rip right through non-factory tint, I work at a detailing shop and we use steel wool on every window we clean, it won't scratch it at all.