UPDATE

koptilnya/engine_remastered/wheel/friction_preset.txt

@@ -0,0 +1,18 @@
+local FrictionPreset = class('FrictionPreset')
+
+function FrictionPreset:initialize(config)
+    config = config or {}
+
+    self.B = config.B or 10.86
+    self.C = config.C or 2.15
+    self.D = config.D or 0.933
+    self.E = config.E or 0.992
+end
+
+function FrictionPreset:evaluate(slip)
+    local t = math.abs(slip)
+
+    return self.D * math.sin(self.C * math.atan(self.B * t - self.E * (self.B * t - math.atan(self.B * t))))
+end
+
+return FrictionPreset