It's thought the exact same Rays/Bridgestone combo will feature on the upcoming V-Spec GT-R. Other goodies include a pair of carbon-backed, leather Recaro buckets which retain the side airbags yet lose the electric motors, saving six kilograms per seat.

A lightweight titanium exhaust is also available (dropping five kilos) as is a new carbon-fibre undertray. The bad news? The package costs nearly £30,000 and it's only available in Japan.

Nissan will honour warranties on NISMO-equipped GT-Rs but only if the car is inspected by NISMO following any forays onto the track.