I agree 35% all around is the way to go. I have 35% on my 300E. It looks good in the day(reflects UV rays so your A/C is a thousand times more efficient,looks great at night,doest attract police,and it makes you car look more statelier. Dark dark tints attract the wrong kind of attention,with dark tints police feel that you have something to hide and crooks think you have big $$$ equiptment in your car. 35% is most suitable.
1987 mercedes 300E
1995 e320 conversion(hated the 300e grill)
Monochromatic Paint (Custom Blue)
Flat Badged (front)
custom "carbon fiber" console
18 inch HP EVO rims
Sold! Now I drive a Monte Carlo SS