My reception has been better with the window antenna, than with my previous top-mounted antennae on my SVTF.
Much better reception through the AM frequencies, I could never really get the Tigers game before, now it's crystal clear.
The FM reception is a bit better too, a couple local stations had a weak signal with the previous car, now I can hear them better.
... and my windows have 20% tint.
I cannot see how tint would affect reception... unless you tried sanding down those dots... there are a couple of vertical lines within the dotted zone (maybe part of the antenna system?)