The new rule is under evaluation as part of a planned expansion of the WEC grid to a minimum of 40 cars from the current 37-strong field for 2025, Autosport has learned.
It would remove the ability of a factory team to run a single car as Cadillac Racing has done since last season, Iron Lynx Lamborghini is doing this year and as the Heart of Racing Aston Martin squad has announced for next season.
