ASTTrprDillon95

All models have either 2 or 3 LODs. That simply means that there are 2 or 3 different levels of detail in game. LOD 1 is the main LOD when you are close to a car. LOD 2 is when you are some what far away. LOD 3 is when you are far away from the vehicle. the wheels disappear because the hierarchy in the Vehicle model is as follows:
 
Chassis_L0
chassis_L1
chassis_L2
 
These 3 chassis are the different levels of LODs. 
 
In the hierarchy of the wheels, it goes this way:
 
[wheelmesh_L0]
[wheelmesh_L1]
 
There is not L2 which is the third level of LOD, thus the wheel disappears.

It seems that your accounts are not linked. Do ensure that you RGSC account is linked to your GFWL gamertag

In the scripts folder there should be spotlight.ini. I uuaslly edit it before I place it in the scripts folder. And always remember the keys to the spotlight. If you do need to edit it and at alzy to copy and paste again use SparkIV to edit it