You should be able to use the Tire Icon under the Forces Tab and then select the tire/roadusing initially one from the installation directory (atire) as in the picture.
Creating your own tire could be done if you have some partial technical info, using the tire fitting tool (ACAR)
You should be able to use the Tire Icon under the Forces Tab and then select the tire/roadusing initially one from the installation directory (atire) as in the picture.
Creating your own tire could be done if you have some partial technical info, using the tire fitting tool (ACAR)