This is in a program that I wrote for myself, so I don't expect to sell. I have an after market tire pressure monitoring system
PressurePro. The calculator is in no part tied to them.
I just put the variables into a program, one could easily do it in an excel spreadsheet. I used the basic formula from post on this forum such as
http://www.sportsmobileforum.com/for...ay-1247-2.html. I used the load index that is on the side of the tire, and the load rating. You can find generic tables for these on the web. Obviously you need to weigh the front and back axle's.
I could probably just make a stand alone calculator, I would need to expand my look up tables (as I limited them to what I expected to use on my van). If there was a level of interest I could do it, although I code for my enjoyment and to keep my retired mind going. I was actually hardware engineer, not a software engine for my career.
-greg