The Nissan GT-R package balances this power with practicability - two contradicting factors - to realize a new dimensional multiperformance supercar with ultimate performance for " anyone, anywhere, anytime" . Offering the acceleration performance of a supercar, the Nissan GT-R holds a higher dimension of 'cornering and braking'.
2.Premium Midship Package
The Nissan GT-R adopts a newly developed Premium Midship package, a furtherly advanced form of the FM (Front Midship) package. " Force of the Earth" - Utilizing natural forces to the maximum - Returning to the fundamental principle of what an automobile should be, the vehicle is designed to convert inertia force, generated by the earth's natural forces (gravity) and the vehicle in movement, into tire grip, and change airflow into a stabilizing force. As a result, Nissan developed a drive system especially and exclusively for the new Nissan GT-R called Independent Transaxle 4WD (Nissan patent). This independent transaxle 4WD was unified with the rear final drive unit, and the front and rear were integrated by a carbon propeller shaft, after moving the clutch, transmission, and transfer to the rear of the vehicle for the first time in world.
2-1. Stabilized ground load on all four wheels
On conventional vehicles, there was a tendency for front wheels to loose adhesion from meeting resistance of an invisible wall of air, causing load to slip. The load shifts to the rear as drive force is applied, causing the front wheels to lift, lighter steering. Especially in rainy weather when air density rises, the front wheels lift further, creating a higher possibility for a hydroplane phenomenon to occur. In order to stabilize load-distribution on all four wheels, the basic elements for packaging were reconsidered, to create a package that fully utilizes natural forces of the earth.
Optimized Load Distribution
Discussion on load distribution of conventional vehicles has been focused on the static load distribution during stopping. However, to ultimately heighten the fundamental performances of "driving, cornering, braking" , inertia load shift has been fully separated and independent between the front and rear wheels; the engine load on the front tires and transaxle load on the rear. In addition to this, the transaxle placed below the rear wheel center lowers the center of gravity of the vehicle. The Nissan GT-R, capable of utilizing inertia load, realizes ultimate flat riding comfort with minimal load shift during braking, cornering and any driving situation.
Optimized Dimension
The basic dimension of the vehicle has also been optimized. Run-flat tires with a large diameter and high capacity have been adopted to maximize the tire grip area where power and torque are applied, and optimize power weight and torque weight ratio... Heavy load is placed in the center of the vehicle based on the wheelbase tread. A brake with powerful braking force, is adopted to handle " driving and cornering" . The optimized dimension realizes balanced load distribution on all four wheels, improved cornering performance and stability, pitching convergence, damping force and braking force improvement, and minimized shift in posture.
Fun-to-Drive Range Expanded
As load distribution is evenly balanced on all four wheels with the optimized load distribution and dimension, vehicle behavior is easy to grasp, allowing the driver to start accelerating earlier. In addition, powerful traction of the front wheels helps the vehicle to accurately accelerate in the steered direction. With this newly created " traction steering" driving concept, the fun-to-drive range is widely expanded.
2-2. Balanced combination of powertrain cooling performance and aerodynamics
The newly developed Premium Midship Package has achieved a balance in the improvement of aerodynamics and cooling, two contradictory performances of the powertrain. The Nissan GT-R designers moved the transmission from just behind the engine to the rear. Cooling air passes over the engine, enters a space where the transaxle would normally be, then passes through the floor tunnel to cool the transaxle. This cools the powertrain far more efficiently. Creating this flow from the engine room to through the floor tunnel enables downforce air control under the floor, just as a racing car.
Aerodynamics and Cooling Performance
Working 2 years with Group Lotus in Europe to develop more efficiently, and 1.5 years with Yoshitaka Suzuka in Japan for aerodynamic development using moving belt systems, the vehicle has successfully balanced low air-resistance (2 sets o 2 sets o:0.27) and greater downforce - something formerly believed to be impossible - to realize aerodynamic performance on a par with racing realized . Higher front and rear downforce gives the Nissan GT-R better grip, improves active safety performance, reduces air resistance (Cd: 0.27) and raises fuel-8.
The wind noise during high-speed driving has been reduced by careful reconsideration of the form of each body part. The under floor noise is controlled with the minimized floor through-hole and rectification due to vehicle undercover. This allows the driver to drive at 300km/h on the Autobahn and still enjoy conversation with the person in the passenger seat.
2-3. Reduced powertrain vibration
In the Premium Midship package which adopts an independent transaxle 4WD, powertrain vibration is highly reduced and durability potential at maximum speeds is highly improved. The engine and transmission are independently antivibration mounted, and the transmission placed further away from driver helps clear the engine sound and greatly reduces air noise around the driver seat. This quiet cabin in high-speed driving is made possible by preventing mechanic vibration noise that was formerly generated from the unified engine and transmission at around 4000 revs. The overall length of each the engine and the transaxle, which are separated/ joined by the high vibration damping carbon fiber propshaft, are shorter compared to the conventional FR-4WD vehicle. This highly improves powertrain durability performance at maximum speeds and increases the potential of high-speed driving.
Enhanced noise and vibration performance potential
Enhanced high-speed durability performance potential
3. Driving position and utility
In the Premium Midship package, the transmission has been moved from just behind the engine to the rear, expanding the foot space in the cabin and creating enough space to design an optimized pedal layout. Also, the adoption of run-flat tires helps to realize a larger and flatter trunk space.
Driving Position
Ideal driving position space for supercar drivers-Horizontal distance from floor surface to hip point: 200mm
-Tilt mechanism from the base is applied to keep the steering wheel angle optimized
-The steering position adjusts to optimized angle. (Tilt: 60mm; telescopic： 60mm
-The largest seat position coverage in supercar market Long seat slide: 228mm, lift amount: 30mm
-The best driving position from short females to tall males / 144cm-190cm Optimized pedal layout for smooth operation
-Pedal stroke extension: 65mm (Fairlady Z (Z33): 55mm)
-Optimized pedal angle: 42.5 degrees (Fairlady Z (Z33):37।5 degrees)
-Acceleration pedal surface slip amount: 4.3mm
Cockpit
To enable the driver to fully concentrate on safe driving especially at high speeds, the door mirror, combination meter and multifunction meter are positioned an uniformed height, minimizing the driver's eye movement while driving.
Trunk room
Thanks to the flat floor by abolishing the spare tire, larger trunk room than the other super cars is realized 2sets of golf bags ( 8.5 inches) or a pair of Special A size suitcase and C size suitcase can be loaded. (Trunk room height:435mm, length:850mm, width (maximum):1470mm)
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