Thank you sir, this is a really great addition to AC. I love to race with ai in rally cars here. I use the gravel tyre mod found here on Racedepartment so a lot of sliding, really cool! I don't know if it's possible but I ask in case it's feasable to replace the sound of tyre sliding on tarmac with something more related to dirt-gravel kind of surface like what they did for Glava Zete, that would be perfect...
[SURFACE_0]
KEY=ROAD
DIRT_ADDITIVE=1 (to get dust when you drive on the track)
WAV=sand.wav (to get a gravel sound when driving), enjoy! :)