i can see where its rubbing...seems to be a lumpy bit of arch trim just inside the arch sort of by the bumper join...
think i'm gunna take the wheel off, remove the arch trim, whack whatever the metal work its covering right in...then melt the plastic back in on itself
Its only on big bumps it rubs....in 90 odd miles tonight it rubbed 3 times....
...as for a leon cupra-r splitter, i aint sure how long it would last on mine!