01THE CHEAP STUFF
● WHY WE PASS
Dyed and metallized films
The cheap end of the market is dyed film. A layer of dye between adhesive and a top coat. Blocks some visible light, almost none of the heat, and turns purple in about a year. The mid-tier is metallized. Better color life, but the metal interferes with cell signal, GPS, tire-pressure sensors, and radar cruise. On a modern car full of antennas, it's a daily problem. Neither is something we'd put on our own vehicle.



