So it’d usually be normal mapping, not bump mapping. Iirc bump maps are just height data and can’t hold normal information (surface face directions in short). Anyway it looks to me like either a normal map or more likely just a flat tire texture. The key tell is how the tire geometry is mostly just a cylinder. If you look at the edges it doesn’t follow the tire pattern.

Depends on how long it sits there, the lunar surface has a pretty wide range of temperatures that cause wear, lots of radiation and the regolith is quite abrasive. But realistically by the time something gets there that could put it back it’ll probably not be worth it from anything but a historical standpoint.

Yeah the early days weren’t so great but it’s getting there. Still wish some of the game communities I’m interested in would migrate already but it’s not bad