The decision made by the FIA and race organiser the Automobile Club de l’Ouest, which jointly formulate the rules for the WEC, covers only the double-points round of the series on 10-11 June.
It has resulted from an “in-depth evaluation of tyre usage data together with the WEC’s exclusive tyre suppliers, Michelin and Goodyear”, according to a statement issued by the ACO on Thursday.
