very nice, that was just texture bump right?
Not a texture in the sense of a flat surface. It is actually a 3 Dimensional pattern. This pattern is made and then "Flowed along the Surface'. Don correctly, the pattern bumps end up in the perfect spot. if the model is flipped, you will see all the patterns are the same size, and there is no gap, like a real tire. Theorhetically, I could post this and it could be made. It would be a ridiculous amount of work, making the pattern and lamt it would work. This method is used on more complex truck models, though this pattern is a bit too complex for that. It is not a texture or texture bump, though.