I always hated this, that when a car is next to you .....you cant hear your gears. ? Have to look at the rpms. Never been in a real race...is that realistic?
i did not have the sound problem either, but now I do...I dont have that problem using interior mic and 5.1 surround sound.
The only time I will have difficulties earing my car is when the other cars are way louder than mine (Honda HSV-010 against any other JGTC/Super GT for example) but even then, I still ear my own car, but its quite dim I'd say.