Thanks Rick. I haven't found the dark tint to be an issue at the track. I use a broadway wide angle mirror, so I can look back with a good visibility range. I originally got the dark tint because it gets really hot during the summer, and the dark tint makes a significant difference. But I have been contemplating going with a lighter tint for a little more visibility and to show a roll bar more clearly (I'd like to get a new roll bar in the future)