My ZJ has 5% on the back side windows, 18% on the two front windows, and 3.5% on the hatch window. That's what it all metered at at the shop that did it for me. Luckily, in Indiana, MPV vehicles aren't governed by tint laws. It is a hassle though. I can't see anything backing up at night. Even shaded trails are difficult should I need to reverse.
01 TJ - 4.0L, NV3550, 2" Skyjacker budget boost, Xenon flat flares, LoD front bumper, Tuff Stuff rear bumper, RH4X4 sliders, 33" STT Pros on 15x8s