In reference to
@Blood*Specter I am aware RRE had good audio. Although I haven't played it since my last PC several years ago but do remember it had nice sounds. While I have Sony 7.1 Virtual Surround headphones as well as good stereo pairs I dont really play with headphones that often.
@bleeder is pCARS even proper stereo, do the two wheels on grass or kerb test and listen to the other channel. I think they produce the sound to both L/R but maybe reduce its volume on the opposite side. To me it creates more of a loud boldness to the audio presentation but not good directional benefits.
I currently uninstalled it to make space for Horizon3 and GOW4. Went through a 250gb SSD in no time and the 2nd one is almost full now.