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Volkswagen’s concept CUV fitted with futuristic Hankook tyres.

A VW logo sits on a covering under the bonnet of a Volkswagen AG Passat TDI automobile powered by a turbocharged direct injection engine in London, U.K., on Wednesday, Dec. 2, 2015. Volkswagen is grappling with an emissions scandal on three fronts: cheating software installed in about 11 million vehicles worldwide with 1.2-, 1.6- and 2.0-liter engines; irregular carbon dioxide ratings on about 800,000 vehicles in Europe; and questionable emissions software in about 85,000 VW, Audi and Porsche vehicles with 3.0-liter diesel engines in the U.S. Photographer: Miles Willis/Bloomberg via Getty Images
Posted: September 20, 2017 at 8:23 am   /   by   /   comments (0)

A new concept tyre from South Korea’s Hankook Tyre is being showcased on the Volkswagen I.D. Crozz II electric drive concept vehicle on display at the IAA Motor Show beginning today. The international show takes place September 14-24 in Frankfurt, Germany.

The AWD four-door vehicle is the first electric crossover utility vehicle (CUV) from Volkswagen. Hankook’s concept tyre for the vehicle is its interpretation of innovative tyres for electric vehicles of the future. The anthracite color of the tyre blends with the design of the vehicle and is made with a special tread and sidewall compound that contains white filler materials rather than soot. An inlay on the tyre sidewall adapted to the tyre design provides a visual contrast and contributes to interplay between wheel and tyre, according to Hankook.

The tread of the concept tyre is produced from a heated mould, like conventional road tyres, so the production process can be mostly automated, Hankook said. The usual procedure for concept tyres has been to cut the tread by hand into a blank tyre similar to a slick following vulcanization. With the tyre for the I.D. Crozz II, only the inlay on the side wall was attached by hand. The dimensions of the concept tyre correspond to size 245/45R21 in conventional tyres. The diameter, which is large compared to the tyre width, creates a slim, high silhouette.

The result is a lower drag coefficient in relation to the contact area compared with conventional tyre dimensions for energy efficiency and lower rolling resistance. The tyre’s large diameter also results in less deformation and reshaping, which has a positive effect on rolling resistance. The size of the contact area, which is important for brake performance, traction and lateral stability, is relatively large despite the small tyre width, so that no compromises have to be made in terms of tyre performance in conjunction with the high-grip tread compound.

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