Yes, for the trackwidth, you need to modify the suspensions.ini file in the data folder , precisely in this section (values below are just an exemple ofc) :
[GRAPHICS_OFFSETS]
WHEEL_LF=-0.06 ;Left front graphical offset of the wheel positioning in the x axis (width). + is left - is right movement
SUSP_LF=-0.06 ;Left front graphical offset of the suspension positioning in the x axis (width). + is left - is right movement
WHEEL_RF=0.06 ; Right front as above
SUSP_RF=0.06 ; Right front as above
WHEEL_LR=-0.09 ; Left rear as above
SUSP_LR=-0.19 ; Left rear as above
WHEEL_RR=0.09 ; Right rear as above
SUSP_RR=0.19 ; Right rear as above
You can do it in CM ticking the "Align using data" function. That will display the car the same as ingame.
In case the wheelbase is also wrong ingame, you 'll need to alter the car.ini file here (3rd number) :
[BASIC]
GRAPHICS_OFFSET=0.0,-0.61,-0.40 ; 3 axis correction (x,y,z), applies only to the 3D object of the car (meters)
and the suspensions.ini here :
[BASIC]
WHEELBASE=2.395 ; Wheelbase distance in meters
Hope it helps