Here you can have a look at two different approaches I made - one with the normal "wind tunnel meshing" and the other one with the parametric option. Alternatively I have set up another one with very fine mesh which was not submitted by me. I would recommend that you use the parametric Mesh. I have corrected the "error" at the rear tires that have been coarse applying a surface refinement (you can see that as the last refinement in the corresponding section).
Link: Project mlino
Let me know if you have any further questions.