If you find a car with wheels the right size, you can borrow them with CarWorks and it should work exactly as for the donor car. Only problem with CarWorks will come if you wanted to make different models for the different resolutions. It just scales the same model for the three sizes. What you can do is take the model that you'll use for driving and put it in CarWorks as an OBJ in meters. Then, when you're done with the whole thing, you just edit the car0 to add more detail. But if all models are the same, it's easier.