Note: Tire Attribute Files can only be used with the advanced dynamics model and has no effect on simulation systems that are using the simple dynamics model.

The Tire Attribute File assigns a tire parameter file to an attribute number. By assigning a tire file to an attribute number, you can easily change the tire characteristics at various places along the roadway, by associating an attribute number to a roadway lane number. When the program receives a request to change the surface attribute, then any tire that it detects on this specific surface will have the tire characteristics defined in the specified file.

On each line of the file, the first entry is the attribute number, followed by the equals sign and then the name of the tire parameter file. The format for the Tire Attribute File is:

1 = Soft_Shoulder.Tir
2 = Gravel.Tir
3 = Ice.Tir
4 = Wet.Tir
5 = Grass.Tir
6 = Flat.Tir

If during a run, a Surface Attribute Number is encountered in the roadway that has not been assigned in the Tire Attribute File, the original tire parameters are restored, and a log file entry is added noting that the Surface Attribute Number was not found in the Tire Attribute File.