See my post under general discussions. The passenger seat, without tilt adjustment, makes you feel like you are in a deep bucket with your knees against your chest, and the gap between the cushion and the seat back, designed to allow the seat to go up and down on the driver side, makes for poor ergonomics for both, especially for the passenger.

The gen 4 and gen 5 Maxima front seats have cheaped height adjustment and tilt too far back for my taste. Placing a 3/4 inch spacer at the rear where the seat frame bolts to the floor makes a big improvement. Use a 10mm diam, 1.25 pitch 45mm length (3/4" longer than standard) metric bolt, washer and lock washer, and stack of 1/2 inch (hole) diameter flat washers to do this. Just pull of the plastic boots, remove the bolts, tilt up and put in your stack of spacers, tighten in the new bolts, replace the plastic covers.

Voila.

If you have a cloth maxima, you will probably want to do driver and passenger. If you have leather, the gap is not as big a problem and the driver seat adjustment can compensate for the tilt. It only takes a few minutes with a metric socket set and new bolts. Try it... if you like it, keep it. If not.... don't.