[Rory McNeil]

Maybe it depends on how long the tint has been on, but my experiance on my old 69 Fairlane Cobra mirrored what Mark said. I just used some new sharp razor blades, and the tint came off fairly easily, in large sections. Did not use any heat source. With many later car back glasses, you need to be very carefull around any electric rear defogger lines, very easy to damage or destroy, if that is a concern.