dynamically modifies a car's tire grip on wet terrain in response to actual wheel slip, precipitation, and ground moisture.
The effect keeps road driving stable even in heavy rain, but it only kicks in when tires truly slip, mostly at sluggish work speeds.
The wet-grip effect's intensity is controlled using a slider in the game's settings.
More traction is preserved at lower values.
Wheel slip on wet terrain is increased by higher values.
operates automatically on all wheeled vehicles and accounts for tire width and multiple wheels.

FSClub-FIN is credited.