Getting crud off the windows

[Kibokojoe]

PO used some kind of cleaner that left a residue on the tinted side of the glass. I started trying to clean it with windex...no good. Alcohol..no good. Finally tried some simple green but it takes like 5 minutes of rubbing to clean as 2" spot. There has got to be a better way. When I rub the crud long enough it turns to a powder and wipes off. I am thinking it maybe wax of some kind. Is there anyway of getting this off quickly? How about bug remover (turpentine)? I could try acetone but I will have to be very careful not to get it on anything else, and what about the effect on the tint. This crud is only on the side windows. Not on the windsheild or rear window.

[Evan]

scrape it off with a razor

[repenttokyo]

scrape it off with a razor

not a bad plan, but it could also remove his tint.

[E34N]

Because you have tint film (don't believe older BMWs offered tinted glass), you are pretty limited to the milder type of chemicals. Any type of harsh chemicals will most likely ruin/affect the tint. Simple green is probably the way you have to go. Might also try various 'orange' cleaning agents.. a lot of times those work well on oily type of substances

Or have you tried hot water/sponge? If it's a wax.. it might help.

[Tiger]

The tint is ruined... replace them. Never ever use any kind of solvent on tinted windows... zero.

To clean tinted window, you take one quart of water and 1 teaspoon of Joy in a spray bottle. This solution works for all glass regardless of location... house or car... nor tinted or not.

[attack eagle]

I've used eagle 20/20 + Viva paper towels (softest I've found) sucessfully for several years now. I smoked in my previous car, (NOT IN THE BMW!)
my procedure is as follows.
WEt glass well with cleaner and wipe off with a paper towel, taht will remove almost everythign but a film.
To clean the film off, spray the 20/20 on the paper towel itself and wipe window down well, once it dries to a haze, buff it off with a clean very slightly damp papertowel, turning frequently. When I say buff i mean it, adn when I say slightly damp I mean it.
It pulls smoke film off the glass, so it should work for whatever you have on there..

[Kibokojoe]

I finally got the goo off the windows. I used simple green and elbow grease. Followed up the mothers wax and they look pretty good.

[Ross]

0000 steel wool and acetone.

[Kibokojoe]

Won't acetone eat the tint?

[Qube]

Goo gone