BFG All Terrains KO2 PSI
I have 35x12.5 r18 BFG KO2 load range E tires on my truck. They state max load 3400lbs at 65psi. Anyone else carrying at TC with load range E tires that go to 65lbs and not 80lbs? I figure just fol...
Forum Discussion
Weigh your truck and then consult the tire manufacturer's tire inflation table to find the minimum pressure you can run to carry the weight on the road. While your tire manufacturer is the best source, looking up the tire size by size and load range, any tire inflation chart will get you very close. The chart I use most often is the Toyo because it's easiest to find. Scroll down to page 27 and your tire should be the top row: Toyo Inflation Chart. Notice that 65 psi is the maximum for an E tire in your size, an F tire max would be 80 psi.
All this said, the maximum you can run is the max pressure on the side wall. Running a tire with higher psi than what you need according to the tire inflation chart will only result in a harsher ride and accelrated tire wear in the center of the tire. Running lower psi than required can lead to a catostrophic failure. So it's always better to err on the side of more psi than you think you need.
Another advantage and why I always run 20psi over required, is the higher pressure reduces sidewall flex which isn't a good feeling with a camper on board. I only need 55psi for my tires when I have the camper, but run 70 or 80(max) to reduce camper sway.
All this said, the maximum you can run is the max pressure on the side wall. Running a tire with higher psi than what you need according to the tire inflation chart will only result in a harsher ride and accelrated tire wear in the center of the tire. Running lower psi than required can lead to a catostrophic failure. So it's always better to err on the side of more psi than you think you need.
Another advantage and why I always run 20psi over required, is the higher pressure reduces sidewall flex which isn't a good feeling with a camper on board. I only need 55psi for my tires when I have the camper, but run 70 or 80(max) to reduce camper sway.
