Standard Stratum without dirt
This mod will remove the dirt from the Stratum textures, other textures, however, remain standard. Also the dirt was removed from the bumpers and side skirts, which can be set in the tuning room.
Put on a clean game.
In order to any other vehicle (except for the street racers) did not have the reflections and dirt, install HD Vehicle.txd from Vova_Meow (I also posted).