I´m having a similar problem. Everything in Blender is as it should be, I followed all the steps and recommendations, the car in the showroom looks ok, but if I apply the values I get a mess, the wheels are totally out of place and the drivers is way backwards.
I also followed all the tips I´ve found, changing the values manually in the showroom, but I can´t find a way to apply those changes to the game model, neither found the way to fix the driver position, and it´s driving me crazy to the point I´m thinking in dismiss the project, because I can´t find any useful information at all anywhere that works. Any indication you can give about this?
EDIT: I can share the Blender scene if that helps.
If you just want to fix the position of the wheels in your car you have to do this:
1. Open Content Manager and in the "auto content" tab select the mod with the wheels out of position.
2. At the bottom of the screen now select "folder" and the car folder will open for you.
3. Unzip and delete the "data.acd" file and open the "data" folder you got.
4. Open the "car.ini" file and keep it open.
5. Now in Content Manager open "CMshowroom".
6. In the Menu, click the "car parameters" tab (the car icon).
7. In the "Wheels" section, check "Align using data"
(you will now be able to see in real time the changes you will make to the data in the.ini files)
8. Now keep your car in the showroom on one side of the screen and the "car.ini" tab on the other side.
9. the parameters you are interested in are in the "[BASIC]" section.
You will need to change the value in "GRAPHICS_OFFSET = 0, -0.56, -0.00"
10. The value you are interested in is the third, "-0.00".
Move this value until you see the wheels in the position you want, a shift of -0.02 already produces results, so proceed for small movements until you reach the position you want.