My tails I tinted but I didnt tint to tint, I tinted to cover up some of that crappy whitish stuff. You can still see red when the car sits there with no break light or anything and you can see the reflectors in the tail light and I had my dad drive my car while I followed and at different distances they were visable. I also tinted my brother's Cavilier tail lights and that was just to tint to tint. I am actually surprised at how well that you can actually see the break lights on that.