av8rds wrote:
I know one guy who does it regularly with 19.5's and know of another that does it with no adverse effects.
I do drive on Pismo beach several times a year with my 19.5's... with two people in the truck and motorcycles in the bed. I have aired the tires down as low as 50 PSI and never had one de-bead, but I don't dare go lower than that. I've been able to drive pretty much everywhere in the dunes, but I can and do get stuck very easily and I can't even dream of using 2WD on anything but the flattest hard-pack sand.
I would
never ever ever drive on the beach with 19.5'
and my 3500 lb. camper on-board unless I had somebody in another full size 4X4 to pull me out
when I got stuck.
I should add that my brother has a nearly identical truck as mine but he runs Nitto Dura Grapplers in a 285/75-17 and airs down to ~25psi on the beach and tows a toy-hauler. The difference between where our two trucks can go is night and day!
-Mark