When setting the snow parameter to true in the RainParticles class of the terrain config, vehicles and terrain still have default raining sounds.
The wiki suggest it should update the sound controller, but it doesn't. (see the class_RainParticles wiki links header/notes)
It only takes effect after i run this:
setRain rainParams
Here is video what i mean.
https://youtu.be/K002q6vGrHg?si=RhGo0z2Qc84dGxNb
https://community.bistudio.com/wiki/Arma_3:_CfgWorlds_Config_Reference#class_RainParticles
https://community.bistudio.com/wiki/Arma_3:_Sound:_SoundControllers
https://community.bistudio.com/wiki/setRain
https://community.bistudio.com/wiki/rainParams