I have metallic 20% tint (legal is 35%) and my GPS works just fine. Tinting wasn't an option in my mind because I have to watch out for sun exposure (medication I take).
It also really nice to be able to reduce the amount of heat the sun delivers - here in Houston that matters a lot in the summer.
It also really nice to be able to reduce the amount of heat the sun delivers - here in Houston that matters a lot in the summer.