I am fairly new to Blender and have followed BlenderGuru’s tutorials to get familiar with the program. This is my first serious attempt at modeling and texturing in blender, any C&C are most definitely welcome.
looks really great!
the rim mesh is kewl and i like the subtle DOF very much.
you could tweak the materials a bit more. the tire could be darker (it has almost the same color than the rim). you also got some funkyness on the tires. do you know where it comes from? reflecting and shiny stuff benefits a lot from a good environment. try a good HDR etc.
anyway, great job!