Going way back to my N50 x 15 days I believe the gold standard was 4.5" rear space. But even with 4.5" air shocks were required to keep the fender lip from gouging into the sidewall near the tread of an N50. Now a 295 50 25 is not as tall as an N50 but it is still very wide. I will say with the rear space you have you"ll need some lift to keep from damaging your 1/4 panel and tires.