|Nissan says this is a road car, and maybe that’s technically true. You may be familiar with this car’s evil twin, the R390 GT1 Le Mans GT1-class racer. These twins aren’t so different, really: the R390 is just like its pure Le Mans racer stablemate, with mufflers and turn signals thrown into the mix — incidentally, the front headlights are pulled from its little sibling, the 300ZX — so it’s hard to imagine a worse car for grabbing groceries in. But it’s truly road-legal, at least in Japan and some European countries. It also looks stunning, thanks to bodywork by Ian Callum, who’s rightly famous for his gorgeous Aston Martin and Jaguar designs, among others. As for the rest, that’s where the racing technology really comes into play. The body and chassis are fully carbon-fiber, the gearbox is sequential, and the aerodynamics are optimized for extremely high speeds, which are attainable thanks to a 3.5-liter Nissan V8 emboldened by a pair of turbochargers to the tune of 550 horsepower. Considering the imposingly long R390 only weighs a bit more than 2,200 lbs., that’s plenty to make the R390 not only the fastest Nissan in absolute terms, but also the most expensive, at a cool $1 million new.|
— Official description 
The 1998 R390 Road Car is a one-off production car built in order to homologate the R390 GT1. Based on the racing variant but modified for road use, it could hit 199 mph (320 km/h) as top speed, which made it the fastest Nissan road model until the arrival of the R35 GT-R.
The R390 Road Car was never sold to the public, but has been put on display at the Nissan Heritage Collection museum in Japan. The Nismo GT-R LM is another one-off production car by Nissan built for homologation purposes.
Requires the Top Gear Car Pack
Purchase from the car dealer for 730,000 CR
Performance & Body Family
Top Speed: 198.9 mph (320 km/h)
0-60 mph (0-97 km/h): 3.900 secs.
0-100 mph (0-161 km/h): 6.800 secs.
60-0 mph (97-0 km/h): 89.8 ft (27.4 m)
100-0 mph (161-0 km/h): 233.4 ft (71.1 m)
60 mph (97 km/h): 1.28 g
120 mph (193 km/h): 1.39 g
Requires the March Meguiar's Car Pack
Purchase from the Autoshow for 1,200,000 CR
Performance & Body Style
|Conversion - Engine|
|V8TT - #32 R390 GT1|
|V8TT - #32 R390 GT1|
|V6TT - GT-R '12|
|3.8L V6 - TT|
|Conversion - Drivetrain|
- ↑ "Forza Motorsport 5 - Cars". forzamotorsport.net. Retrieved 04-29-2018.
- ↑ "Nissan R390 GT1 (1998 : R390)". nissan-global.com. Retrieved 04-29-2018.