The Dallara F191 is one of the Dallara entries the open record knows by name, and by little else. That is not nothing: a name in the catalogue is where a car's story starts to be recoverable. Giampaolo Dallara (Technical Director) / Nigel Cowperthwaite (Chief Designer) drew it.
The background
The Dallara F191 was a Formula One car designed by Giampaolo Dallara and Nigel Cowperthwaite for use by the BMS Scuderia Italia team during the 1991 Formula One season. The car was powered by the Judd V10 engine and ran on Pirelli tyres. Its best finish was at the San Marino Grand Prix when JJ Lehto drove it to third place.
The engineering
660-750 hp @ 13,500 rpm is the published figure. It weighs 505kg. Work it out per tonne and you get about 1307 horsepower — hypercar territory, where the limiting factor is the tyre, not the engine. The wheelbase is 2950 mm. These are manufacturer figures carried by Wikipedia and Wikidata, not road-test measurements.
Where it sits
Its family tree is legible: it took over from the F190; its successor was the F192. Its Dallara stablemates include the Dallara 320 and the Dallara F2 2018.