Does a light tint or medium tint look ok only on the back doors? Deciding between 80% front/60% back and 80/40, on top of the factory 75% glass. 80 because it's legal-ish, and not 80 on back because it's more expensive. Back would be Formula One Classic, so there would be a contrast in Air Blue front and a charcoal tone on the back. Curious to see what opinions are on the "van" look, even if it's a light shade like 60% compared to factory 20% on a SUV or minivan.
I spec’ed mine out with the following: Backlight (hatch), 1/4 Windows / Limo tint (very dark) Rear door windows / dark tint Front windows / medium tint.
As far as reducing the amount of heat from sun going into the car, the most important tints are the windshield and the hatch. The side windows don't make as much difference as they don't get hit by as much sun. I personally think it looks weird when the front and rear windows are at different levels. If I lived in California, I would probably tint the hatch 30 or 35 and the all the side windows 50 of a less expensive tint (Ex. 3M Fx Premium). I'd tint the front windshield an expensive ceramic ~80 tint. This will actually look like you have the same tint everywhere (windshield excepted) as the rear always appears brighter due to more light coming through the windshield versus the side windows. There are enough people running around in California with blatantly illegal window tints, that I doubt a 50 tint on the front window will cause you any problems. Also note that typical visible light transmission is around 90% for untinted car windows.
The door windows make a HUGE difference in Florida! 90% of the time the sun in beating down on one side or the other. Whether you are parked or driving. I'm hoping to be able to have mine tinted in the next month.