Check out the attached file. Just change the .txt to .car  Of course, just suplement your own textures - they're not included in the file

I didn't spend time creating 3 Shading domains, just 1: tread.  3 Would be more efficient however. In my UV map, I've created a single map with overlapping mesh - this is not a good idea for doing sidewall art. However, using the "detach mesh" option, you can do an unwrap, move the various meshes around by selecting them with their domain names, and then have a single texture map for the whole object if you like. Otherwise you may want to create multiple maps for the single object for maximum fidelity and control.