in my opinion, the sound from the bike riding over the dirt is a bit too loud.
I don't want to turn it off since it's nice to have but is there any way to make it more quit?
I dont think thats the sound of riding over the dirt as much as it is when your foot hits the ground from when they updated the dab feature. I know what your talking about you hear almost a loud scrape but I only get that when I am cornering hard and holding the dab button. Try running some laps and see if that is the issue it is a bit annoying but it also helps because when I hear the noise I know I am already leaned over about as far as I can go without crashing or we might be talking about to completely different things but thats the only time I hear it.
You could be talking about the sound of riding on sand. It was added, or at least increased very much, in Beta 14. Not all surfaces have this sound, only sand as far as I know.