Looking to upgrade from 15" to 16" wheels and LT tires.

So looks like my GAWR is 4400 lbs. Seems kind of light, no?

Every set of LT235/75R15 that have found searching are C rated with just under max payload of 2000 lbs at max PSI. With a dry weight of 7199 lbs and GVWR of 10227 lbs, I'm assuming I would have to look at a LT 16" tire right?

The stock Akuret ST225/75r15D is rated at 2540 lbs at 65 psi. Read some nasty things on these tires. Reports of bubbles developing.