@Patrik Marek it's actually the tire rolling you're hearing. Please note you can always tweak the levels with the sliders in the audio menu. Some people like things louder some not, and everybody have his own vision of what is right and realistic for every car. Unfortunately we'll never be able to make everyone happy with defaults, so we'll have to start working with the sliders (they are there for this reason after all). Please, give a go on the sliders and if you still not happy, there's an optional download under version history here featuring the older onboards with few tweaks.