GT-R
The new Nissan GT-R uses probably the most advanced four-wheel drive system ever used on a road car. The four-wheel drive (ATTESA E-TS) optimally distributes power to the front wheels when and if necessary. Though normally 100% rear-drive biased, up to 50% of torque can be fed to the front wheels improving traction in difficult conditions- such as rain, ice or snow. Front drive is also utilised to improve cornering performance on tarmac, improving traction and stability. Special computerised controls automatically alter the front/rear torque split from zero torque at the front wheels up to 50% of total torque. The control is varied continously as various sensors on the car measure speed, lateral and transverse accelaration , steering angles, tyre slip and other road surface and yaw rates.
The four-wheel drive system includes an Electronic Stability Program (ESP), the Nissan GT-R's stability control system. This continually monitors the vehicle's behavior. If off balance behavior is detected- such as sliding or skidding- torque to the wheels will be altered to help stabilise the car. Electronic traction control is also fitted to rear mechanical limited- slip differentials, preventing wheelspin and improving grip.
