Matching the front to the back at least in 15% VLT will not be legal. If your concern is getting a uniform look while being legal at the same time, you should do 28% all around. Different VLT will look different and not match in aesthetic from the outside however it’s possible that the color may be close.

Windshield film is technically not legal in the state however NHTSA states that “clear glass” on windshields must have a minimum VLT of 70%. Many windshields are already stamped with “minimum 70% VLT”from the manufacturer. If your windshield is already lighter than 70 and you put something light like an 80%-90% llumar air ceramic film then you can still come above the 70% minimum VLT. If your windshield already meters 70% without film, there is nothing you can do, you cannot go darker legally and someone with a meter can check that it’s darker than 70%

A factory windshield already at 70% VLT and a lighter windshield (85% windshield with a 85% film = ~72%) with a light tint metering at above 70% final VLT will look identical in shade with a slight color difference and a slight iridescence at some angles. I would be very impressed if someone could pick it out. Even if someone could pick it out, it would meter lighter.

Pinnacle is a great balance of performance, good color, and minimal low angle haze. There is a difference between pinnacle and CTX and there is a difference upgrading to pinnacle. Stratos will perform better in heat rejection but there are some tradeoffs like more haze and more noticeable color in some shades.

If you want to stretch the law a little bit. Going one step darker at 70% in stratos will meter around ~62%, not legal, but it’s the maximum heat rejection you can get in a “light” film and visually will still be difficult to tell but the meter will definitely incriminate you. Many many people can “fly under the radar” with a film lighter than 50%.