Should I buy these? Will they fit my 96 tracker? Planning on going to 235's on my 96 tracker with stock wheels, but plan on airing down quite a bit for desert trails. Question is, do I need to worry about airing down with 235's on stock rims? Or should I pick up some wider rims like these? Or is it the tire construction /profile more then the rim size re: bead pop at low air?
http://denver.craigslist.org/pts/2743102081.html

I've had 235's on my bone stock 93 kick and go out in the desert, up sand washes and over rocks and have never aired down... A lot of times i cruise for hours before even putting it in 4/hi and lock my hubs... a lot of times I'll go to 4/lo without locking the hubs just because I need  the power.. I usually run out of whoopie before I run out of traction..I carry about 23lbs all around and have never aired down... But there was that one time when a thorn bush aired down for me.....

I have aired down to 12 pounds with 235/75 R15 tires on stock rims and have not had an issue.  My brother was running around at the last Fall Adventure with 14 pounds and had nothing bad happen.