...even when washing it? And I live in San Diego, not like in TX where the cling probably would bake into the window. But the windows are tinted, so it would have to be on the outside. The cling is about 6quot; in diameter.
I would think it may stick, but it would probably fall off due to the bumpiness of driving, plus when you wash it, it will make it fall off. If your windows are tinted, I wouldn't even mess with it because it may cause a discoloration, but I am not positive. I hope this helps you some! Btw, I love window clings too! :)