That sounds pretty funny, when my C was tinted I had the rear window done in 5% and all the other windows done in 20%. I was never stopped in this car until last year September when they passed a tint law citing anything darker than 35% was illegal.
On the otherhand I also had a passat that had 5% percent on the rear window and 15% on all the other windows. The passat was lowered with 18 inch silver 2pc wheels. One night I was stopped by an asshole police officer that thought that the headrests in my car were the heads of passengers. He demanded that everyone come out of the car, He did not beleive me until his partner came and looked into the car herself and saw I was telling the truth. That I was the only one in the car. You know the other thing was that they never told me why they pulled me over.