Originally Posted by XwChriswX

What are your state limits, look into that before you're doing it.

Most states will typically allow a darker tint on the rear window than the side windows.

A trick to getting darker on the sides is getting either a 60% or 50% tint on the windshield, makes the 'stock' look darker, so your tint isn't as bad.

It's how I get away with 25% on the sides, 10% on the back. Because I have 50% on the front.