Just make sure what ever lubricant you get won't become an issue with your tint, making it bubble up, lift off, discolor?Ah crap. I think my car has the same issue. Got my windows tinted last week. Didn't roll my windows down for a few days. After it was set, I tried rolling the windows down and up and noticed how slow the passenger side was. My friend and I laughed because we thought the tint added "thickness" to the window that prevented it from going up easily, guess that's not the case.