Peter,
my 3.7l roadster with spare or without does the same. Far worse than the S1 & previous trads. I think it is the front undertray & rear panel for the fog & reverse lights.
John
Good job you never had a three wheeler John. The 5 speeder I had was terrible for sucking the surroundings into the cockpit including rain of course. A 15 mile journey on dry winter roads had the passenger seat covered in salt dust! My Roadster is nothing like as bad.
