Like i said. the center bore is too small. On an R50 it's 108mm. On the later R51 and titan its 100mm. plus the backspacing is off. The tires won't clear the strut.I would do a little more research on this or get feedback from someone who has done it. In all the research that I have done on wheels for the pathfinder, wheels from all years of the pathfinders are interchangeable. The only thing you should have to watch is the tire aspect ratio which will change as you increase the rim size. Infinity QX4 and Titan rims should fit as well.
I am not 100% on this, but fairly certain that they should work. A quick call to your local dealer should tell you if they would fit as well.