Maybe a strange question, but did yours come with the factory relfected "smoked" treatment on the back windows, did you remove that treatment before the tints or just tint it the way it was?
It has tint over the factory tint. That was installed by the previous owner, it needs to be replaced or removed. If I could remove it without damaging the factory tint, I would.
I removed the dark tint. Underneath it did have factory tint or smoke treatment. I had a bid of $100 to remove the existing tint. I should have paid it. It was a huge pain to remove the aftermarket tint. I highly recommend using a tint company to remove old tint. I tried the trash bag method, the steamer method and the razor blade method. Ugh!