Aww dude, modeling the wheels is the most fun part!
Anyway, it seems it's coming along nicely. The model looks a bit bumpy though so you might want to look into that. At the moment, the surfaces don't look straight. A bit like it's been a race car all it's life and the body parts are all tired from the g-forces. The bumpiness is very evident especially on the top surfaces of the car (hood, roof and trunk lid) and there's some weird topology around the car. Most notably the top of the a-pillar and the bottom of the c-pillar.