Technical Analysis: WRC Cars 2017

[Steve Boyd]

traxx – mud flaps or mud guards (depending on your preference), which Citroen have been using in gravel rallies. Not only this, but while Toyota and Hyundai have a diffuser ahead of the rear wheels, Citroen used to have another mud guard there acting like a negative gurney, sort of lift creator rather than downforce.

Mud flaps in accordance with FIA Appendix J - Article 252 - 7.7 (http://www.fia.com/file/51626/downlo...token=bM0OZdyu) are required on gravel rallies. They aren't aerodynamic appendages added at the discretion of the vehicle builders.