A friend has a 99 Ranger the stock tire size is 245/75R16 "P". He recently had Costco install new Bridgestone tires on his Ranger at just over $800. He mentioned the ride is not as smooth. That got me curious so sure enough they had installed LT245/75R16 "E".
Looked at his door jamb and it said 30psi front and rear. Sure enough they had inflated the tires to 30psi.
I looked up the weight/inflation chart for him and the lowest psi listed was 35 @ 1,710 per tire. Every 5psi the chart adds about 250#. So at 30psi the capacity would be about 1,450# or 2,900# per axle.
I told him the info and he is sticking to 30psi. The tires look to be wearing evenly with about 8,000 miles on them. Most likely he will get 100k no problem.
He said the tires handle good but are stiffer feeling.
