I've heard before that there is a way to 'trick' the Mini into thinking the door is closed so that you can tint the front windows. I've looked for some sort of switch within the door frame, but don't see one. Is there maybe a fuse I can pull that would stop the windows from rolling down temporarily?

 

You have to flip the door lock thing in the door with a screwdriver.

You will know when you get it, the window will go up. Reverse to lower it again before you close the door.

Most Tint shops know how to do this also.