• Size:Staggered Set • Front 19" x 9.5" ET40 • Rear 19" x 10.5" ET45 • Color finish Smooth Stealth • Sold as a set of 4 wheels • Low pressure cast Razor wheels (2 x left, 2 x right) • Include TNA Center Caps • Wheels accept factory hardware • Designed and engineered for the Tesla Model S.
Note: Tires and TPMS are not supplied.
When developing the Model S, Tesla turned to EXA for Computational Fluid Dynamics (think “virtual wind tunnel”). We 3D scanned the Model S equipped with the OEM Turbine wheel and supplied this to EXA to use as a benchmark. EXAs simulation results indicates that our wheel, the Razor™, reduces the drag for the whole car by 9,9%. The side force is reduced by a whopping 94%, and the Turbine wheel shows an inherent asymmetric up-force of 28% compared to the TNA Razor™. This result is achieved by having aerodynamics in mind during the whole design process of the wheel.
Our customers experience a more quiet ride and better course stability along with better efficiency.
"The wheel Tesla didn't make"
We found beauty in the unique form of the sleek side mirrors, the air outlets in the interior, minimalist door handles, the various shapes of fine imbalance and trapezoid shapes. And who can´t forget the maybe most beautiful back in automobile design, with its signature tail lights. A perfect blueprint. This inspired us to shape the necessary brake cooling openings as beautifully sculptured “D’s”, recessed to the inside/backside of the wheel to further minimize turbulences. Creating deep reflections of the sky and sun above we shaped a beautifully curved bowl. A “sensual cheekbone“ visually connecting the holes with the center area, contradicting the technical looks of “spikes” oozing sensuality and soul.
The perfect balance of feminine and male shape.
The lug nuts are hidden by a machined aluminium disc milled to perfection with minimal gaps and topped with a super innovative closing mechanism showing no visible recess, unrivaled within the competition. The aim – creating the clean appearance of a classic center lock. Contrasting to the soft shape in the center area we designed a super detail etched ring coated with exclusive dark or black chrome and our discreet logo in raised lettering. An ornament wrapping around our TNA center cap, also interchangeable with the OEM center cap, standing out in the sea of wheels.
The 19″ Razor is meticulously crafted as a cast wheel yet retaining the same obsessed approach to quality and soul like its bigger brothers. Thanks to a modular casting mold, we can make a bespoke left and right version. After the cast we mill the surface to achieve the same sharp impression and standout character.
No plastic hubcap – simply a well designed aluminium aerowheel standing the test of time.
When constructing an aero wheel, the key is to design a wheel that moves as little air as necessary. In contrast would be the design of a turbine fan, shaped to move as much air as possible.
Air friction is proportional to the square of the speed between an object and the air, for example double speed relates to four times the friction and four times the energy consumption. Think of a rolling wheel on a car, the tire touching the ground has zero speed through the air. The center of the wheel has the same speed as the body of the car. This means the very top of the wheel has double the speed of the car.
Thus the critical part of the aero wheel is the surface where the wheel is interfering with the air curtain coming from the front of the vehicle. Keeping this as flat and as closed as possible is vital.
The second critical factor is the resistance created by the rotation of the wheel. Rotating a fan requires more energy than rotating a disc. With this in mind, we kept the inside of the wheel flat and smooth and the ventilation holes shaped to not move air. The forged technique also gives us the opportunity to make the left and right wheel directional with the car, creating no side force and achieving a sleek symmetric wake behind the car.
Last but not least the wheels weight affects the efficiency, especially in acceleration and braking. A forged wheel typically weighs 25-30% less than the same design casted. However, it is not as simple as putting the wheel on a scale. Mass that is far from the center of rotation is worse than mass that is close to the center. Compare to a figure skater who has her arms out in a pirouette. When she pulls her arms in, she will suddenly start spinning faster even though she did not add any energy.
• Size:Staggered Set • Front 19" x 9.5" ET40 • Rear 19" x 10.5" ET45
• Bolt Pattern: 5x120
Fitment Notes: "Standard" fitment. (Vehicles that have been lowered or altered will need to verify proper clearances to the fender and suspension. The tire section width and alignment settings are also important factors.)
Included in set:
4 x low pressure cast Razor wheels (2 x left, 2 x right) *
4 x Milled aluminium PCD / lug nut covers
8 x Inox screws
4 x Ornaments in black chrome with platinum TNA logo
1 x TNA Removal toolkit designbox
4 x TNA Logo center cap (replaceable by OEM center cap)