I like to always drive with my windows down, which causes my back windows to get smoke grease or whatever u want to call it. I need to know if anyone had a good way of cleaning the windows if they are tinted.

Just buy a glass cleaner that doesnt have ammonia in it. Dont use windex! Just go to auto supply store and get a cleaner that says it safe for tinted windows. I use Stoners brand. I think it's called invisible glass. I know newspaper works great to clean the outside of a window but i dont know about the tinted side. Might stick to papertowels to be safe.

Invisible glass made by stoners. It comes in an aerosol spray can. You could find it any AutoZone and such. It’s safe for tint.