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Tire Inflation Chart

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TIRE INFLATION EQUATION:
 
Tire Weight / Tire Pressure = Load Capacity Pounds per PSI
 
Example:
At 80psi, a 265/75R16 10ply itire will carry 3,085 pounds of load.
 
At 60 psi on a 10ply tire, the tire's load carrying capacity is reduced to 2,314 pounds per tire. 
 
If the customer runs 65 psi in a 10 ply tire, his capacity is now able to carry 2,507 per tire.
 
Tire Weight / Tire Pressure = Load Capacity Pounds per PSI
 
 
Here is this formula using a 265/75R16 E with 60 psi in the tire;
 
3,085 / 80 psi = 38.57 pounds of carrying capacity per PSI.
 
38.57lb X 60psi = 2,314 load carrying capacity
 
So, to wrap this up, a 265/75R16 6ply tire inflated to 50psi, will not only hold more carrying capacity (2,470lb) than a 10ply at 60psi (2,314lb), it will also ride better.