Hankook Tire recently launched the Ventus iON S, the first summer tyre in a new product range that has been specifically designed for electric vehicles.
By taking this approach, the company wants to make a decisive contribution from a tyre choice perspective to advancing the mobility transition towards zero-emission vehicles. The new summer tyre is a pioneer of the new, global “iON” tyre family designed for premium electric vehicles, which will include the Hankook Winter i*cept iON from September this year.
Characteristics of the new tyre include reduced rolling resistance, extremely low noise rolling characteristics and high load-bearing capacity. For drivers of electric cars, this means more range per battery charge and a better driving experience compared to conventional tyres.
In addition, the new Hankook iON products are specially designed for the instant high torques produced by powerful electric vehicles.
The new Hankook Ventus iON S meets the demanding everyday requirements for EV tyres by providing an extensive set of technical measures. In particular, Hankook says it has countered the higher vehicle mass of electric vehicles – caused by the considerable weight of the drive batteries – with a higher load capacity.
Among other things, ultra-resistant aramid fibres effectively counteract the deformation forces caused by the especially high torque in electric vehicles. The tread compound, which features a high proportion of natural resin, also ensures exemplary durability and reduced wear.
The high silica content provides micro-level grip on wet roads by counteracting the formation of a film of water between the road surface and the tyres, which can be dangerous.
Another special feature of the new compound is its high proportion of natural oils. This not only makes the iON products more sustainable overall, but it also has a positive impact on the durability of the tread. This means that less material is required for consistent performance, and the savings in weight of up to one kilogram per tyre improves rolling resistance.
One of the special features of the Ventus iON S is the aerodynamic optimisation so that it can exploit potential for greater levels of efficiency and range. The tyre pattern is designed in such a way that air resistance is reduced, something that is even true for the lettering on the tyre sidewalls.
According to Hankook, a further development goal was to achieve the quietest possible running characteristics, especially since eliminating the noise of an internal combustion engine draws attention to this aspect. It’s therefore all the more important that Hankook’s integrated Sound Absorber technology, together with the noise-reducing tyre pattern, noticeably reduces the level of noise inside the vehicle.
Hankook adds that it has resolved the conflicting objectives of minimising rolling resistance while maintaining the same quality in other important performance criteria. This has also been certified by TÜV SÜD in an independent comparative test using competitor products from the premium segment.
Mounted on common premium electric vehicles, the Hankook Ventus iON S is superior, without showing weakness in other important criteria. It also achieves the best values for wet and dry braking performance. Furthermore, it is also the quietest tyre in the test.
Klaus Krause, head of the Hankook Tire Europe Technical Center in Hanover said: “We are particularly proud that the new Hankook Ventus iON S, for example, has achieved an A/A/A rating on the EU tyre label. This corresponds to the highest performance levels in terms of rolling resistance, wet grip and tyre noise.”
The Hankook Ventus iON S is available in sizes between 18 and 22 inches. The Hankook Winter i*cept iON, designed for winter months, will follow in September 2022. An all‑season version, the Hankook Ventus iON A, will also be available for the North American market. Further specific product designs are in the pipeline.