Haha its just routine here. You either get it done professionally, do it yourself (always a $#% up ) or some people, god knows why, tick that box at the dealers, the dealer sends it out then charges an extra thousand $s or so for the privelege of them dealing with the professional. Its just a necessity here guys. The thing is the quality of the tint. What type and manufacturer. I have used Wincos, made by ?Madico, for my last couple of cars. Optically very good and easy to live with. Actually surprises me that co.s like Audi have not developed photochromatic glass for cars. You can get sunnies that go dark in the sun, why not car glass. Remember, you heard it here first!!
