Short of having a connection to engineers that work at the tire company, what's the general process for trying to model a tire? I am trying to model my real-world vehicle and am trying to wrap my head around the tire tab in the physics spreadsheet. I have a loose tire and I have tires mounted on my wheels, so measurements are possible. But a lot of these things are not really something I can easily measure myself without highly specialized equipment. This is the tire I'm running: https://www.nankang.eu/index.php?id_product=64&controller=product I have a contact at Nankang that I am trying to reach to actually get me in touch with engineers. I realize that some of the information is likely proprietary and they may ask me to keep it confidential, so I may end up having to encrypt the tire data. But, generally speaking, given a tire laying on your garage floor, what would be the process for building a model / getting all the required data to fill out the spreadsheet?