I just got my car windows tinted all around in 3M Crystalline 60 with exception of the windshield. The heat rejection is fantastic and hopefully in the future my left arm won't be darker than my right one. The only issue I have is not with the tint but how it was installed, the tinter seems to have botched the rear window as it has a bunch of smudge and tool markings in it. Will probably get it redone.
I would be careful about tinting the windshield as its a very hard windshield to tint. The tint shop I went to suggested Suntek CXP 80 on the windshield as its the most optically transparent in the 80+ catagory but the tinter couldn't get it to apply without wrinkling. From my research here's a brief breakdown of what I found on most windshield tints.
- 3M Cystalline: causes a wavyness or distortion on steep angled windows like the c-max since its so thick
- Llumar Air Blue: has a fine graininess to it which causes a speckle pattern and halos on bright lights at night
- Suntek CXP 80: has had a bad reputation for being hazy and not very clear but apparently Suntek has addressed this problem. Didn't get it so I don't know.
- Pinnacle Forumla 1: Same film as Llumar Air Blue
- Huber Optek: too thick to apply on windshields
- Photosync: very expensive and hard to find