diff --git a/doc/classes/VehicleWheel.xml b/doc/classes/VehicleWheel.xml
index 0fed9a23ed1..200ea93714b 100644
--- a/doc/classes/VehicleWheel.xml
+++ b/doc/classes/VehicleWheel.xml
@@ -13,7 +13,7 @@
 			<return type="float">
 			</return>
 			<description>
-				Returns a value between 0.0 and 1.0 that indicates whether this wheel is skidding. 0.0 is not skidding, 1.0 means the wheel has lost grip.
+				Returns a value between 0.0 and 1.0 that indicates whether this wheel is skidding. 0.0 is skidding (the wheel has lost grip, e.g. icy terrain), 1.0 means not skidding (the wheel has full grip, e.g. dry asphalt road).
 			</description>
 		</method>
 		<method name="is_in_contact" qualifiers="const">