Originally Posted by dmullen
So inflate the KUMHO's to the maximum 65 psi?
You need to ask Kumho what the recommended psi needs to be. Or maybe the tire installer. No need to run max psi if not needed. You'll just wear out the center of the tires. Under inflated tires will over heat if too much load is on them. Overinflated tires will wear out in the center. You need to find the right psi.
If you have say 2240lbs per tire x4=8960lbs and are only carrying 5000lbs then you don't need max psi. You'll just wear the centers out faster.
I found this on another forum
I spoke w/ one of Kumho's tire application engineers about 18mo ago when I installed Kumhos, and was told that 50psi would support 1975 pounds on the Kumho 857 (at the time I was concerned I might have 50psi wheels). That was from a tire load chart the gentleman accessed.
I have been running 60psi, but after 15,000mi the little mould bumps on the ourside edges of the tread show no wear at all, showing the center of the tire is the only part bearing heavily on the road, indicating that 60psi is higher than optimum for a full tire contact patch. I plan to reduce the pressure.