Looks really good Pogo, would be nice to see updates on the scene. One comment though, I think you should perhaps tone down the specular or increase the roughness on the paint. At the moment it looks a bit like fresh oil paint or 2pac. No paint from the 60's/70's on an old bike survives with that level of gloss. The same probably applies to the tires, the rubber tends to wear to a very matte finish on the areas touching the road and get covered in fine dust on the parts that don't. If you aren't aiming for something close to photorealism though and it's more an artistic choice, feel free to ignore!