In short - car is very quiet from cockpit wiev. When I use rear wiev, car became much more noisy ...

I didn`t play much last few weeks because of my wheel falling appart but I did`t change anything in game since. Only added new cars to keep my bude instal actual ... as I remember I didn`t have this problem before.
... and I did found one option under audio section (player car) set to 101%. If I use this will it make my car more noisy for everybody or just for me?
Engine sound is allready set to 100% and other cars to 66% ...

I guess those options are only for yourself.

So it doesen`t matter what you are doning in this menu. Your opponets do hear eveytime the same sound of your car.

Sorry I hope you could understand my school english