from past experiences most cities/states are okay with people having rear tints are dark as they please, m, most window tint laws apply to front windows.
once I had 10% tint in the rear, 35% tint in the front, cop pulled me over (this was at night), took a light to the tints and let me go without a ticket.
The only negative thing about the back windows being really dark is that at night its hard to really see out of especially when your parking. It does look nice though. The law i think is pretty generic police usually want to identify whose driving the vehicle. ANd if they cant I can see them hassling you.
Well its really nice work.. I like you car.. as it is in black color which is my favorite one and the car is shining after tinting in sunshine. Thanks for sharing you work. Do you have done other modifications with you car? If yes then please share that.