[JRTJH]

There was a time (years ago, back in the 70's and before) when the auto manufacturers provided a chart for us to use to adjust pressure based on what we were using the truck to carry. Then this "stuff started"....

Now, within the past year, we've talked on this forum a number of times about how to use chalk or powder to determine tread contact with the road surface. Why are we doing this? Because we're being "railroaded" into reinventing the wheel every time we need information... I think (just my opinion) that there's charts (used to be available for our use) that are no longer readily available, that would give us the exact pressure to use with a given tire load. But, no, those charts are no longer available to us, we have to rely on chalk or powder to determine what pressure to use so we can maximize tread contact, when that information is "readily available" to the industry. Why? Because we aren't "smart enough to use it or process it properly".... At least that's what I believe.