Tint on front windshield?

brian0128

What are your other windows tinted at? My sister has 5% on all windows on her M3 and 30% on the windshield. It is really difficult to drive on rainy days or once it gets dark. I have to usually roll down the window to make sure I'm in the correct parking space. If it's raining out it's also really hard to see the cars around you. Her car looks good, but damn it's dark. It's so dark that during the day you can't see the speed on the speedo. If you have dark tint all the way around don't do it, but I've seen it look ok on cars that do 50% all the way around.