YOKOHAMA Announces concept tyre “BluEarth-air EF21”
24 Oct 2017

YOKOHAMA today announced the development of the “BluEarth-air EF21”, a conceptual tyre based on the most advanced technologies and the latest design technique for reducing tyres’ weight and environmental impact. Developed to commemorate the Company’s 100^th anniversary, the new tyre will be marketed in Japan on a limited basis this year in one developmental size, 205/55R16 91V.

Seeking to create a more environmentally friendly tyre, YOKOHAMA has employed its latest design technique to achieve a lighter tyre that conserves resources by using less material and improves fuel efficiency by contributing to lighter overall vehicle weight. In addition to being light, the BluEarth-air EF21 has achieved a thin yet highly rigid structure and a weight reduction of about 25% in the tyre’s mass.* The tyre also achieves excellent wet and fuel-efficient performance from the use of a newly developed special compound and YOKOHAMA’s state-of-the-art rubber mixing technology, Advanced Reaction Technology in Mixing. In addition, the BluEarth-air EF21 has received a “AAA” grade for rolling resistance and an “a” grade for wet grip performance, the highest grades awarded under Japan’s tyre labeling system.

* Compared with the ADVAN dB V551, the YOKOHAMA tyre considered to be the Company’s standard for tyre mass.

The BluEarth-air EF21 will be introduced to the world at the YOKOHAMA booth at the upcoming 45^th Tokyo Motor Show 2017, to be held at the Tokyo Big Sight from 25^th October to 5^th November (open to the general public from 28^th October).

BluEarth is a YOKOHAMA global tyre brand based on the concept of “environmentally, human, and socially friendly”. Other tyres in the BluEarth brand include BluEarth-A, which combines excellent wet performance with high fuel efficiency; the BluEarth RV-02, a fuel-efficient tyre for minivans and CUVs; and the BluEarth-Es, a fuel-efficient standard tyre.