I drive my 9000 pound F250 out on the beach without airing the tires down and it does fine. It's also stock with pizza cutter tires. You see stock jeeps out on the beach every weekend doing fine. You will have no issues rolling right out on the beach without airing your tires down. I have yet to see a wrangler stuck on this beach.
Maybe things have changed lately... I've driven all over the OBX's and carolina beach... Even when my old XJ had 285x75x16's I never aired them down and never used low range... I can't see where low range would provide any benefit in sand... maybe I was just lucky..
referencing the 9000lb F250. I can drive my Taco everywhere but the Excursion/F350 burys w/o dropping form 65 to 30-35 psi on 285/70/16. If it has rained usually no issues but if it has been dry for a few weeks its nasty around Hatteras.