Detail improvement on flipups

Renault have added a small slit into the lower element of the rear wheel flipup. The change was introduced at the European GP at the Nürburgring, not accidentally coinciding with the addition of their new front wing. The wing was said to generally improve the car's handling and reduce rear tyre wear while also requiring a vastly different car set-up. As the flipup largely works on air that already passed the front wing, this item shows how important it is to look at the car as a whole to improve its performance instead of updating some bits here and there.