Where LMDh models can race in both series, with the WEC’s 24 Hours of Le Mans, and IMSA’s 24 Hours of Daytona and 12 Hours of Sebring serving as marquee events to enter, IMSA has yet to open the door to hosting LMH designs at its future events.

The tally so far among major auto manufacturers is even at two: Audi and Porsche have sided with LMDh Toyota and Peugeot are all in with LMH. For LMH, purebred prototypes are allowed, along with race-converted supercars, and all manner of engine options and high-power KERS systems are permitted.Įxceptional creativity lives within LMH, and it’s here where projected budgets diverge with LMDh. With LMDh, car companies partner with one of four spec LMP2 prototype suppliers, supply its desired internal combustion engine, affix a spec 40hp kinetic energy recovery system to comply with the hybridization rules, and design custom bodywork that features styling elements from its road cars. In selecting IMSA’s LMDh as its preferred formula, Porsche eschewed its other option, the WEC’s costlier Le Mans Hypercar regulations.

Le mans prototype