Technology:
Sumitomo Rubber will put an oil-free tire on the market on Nov. 22 for the first time in
the world. The oil-free tire is made of plant-derived materials including corn
and field mustard. Oil-derived materials usually account for 60% of the
existing tire.
The newly-developed oil-free tire (righjt) and
a replica of the first tire produced in Japan (left)
The
new time will be sold under the brand name Enasave (saving energy in Japanese)
100. It is 1.2 times stronger against wear than the existing tire. The
suggested retail price of this new tire (195 mm wide) is 21,105 yen. The
company plans to sell a tire whose rolling resistance coefficient is 50% lower than
the existing tire in 2014, showing their determination to place the highest
importance on developing products characterized by energy-saving and low-fuel
consumption. The following two web pages explain Sumitomo's Enasave more in detail (in Japanese).
http://www.srigroup.co.jp/data/open/cnt/3/1749/1/2009_annual_j_05-1.pdf http://www.srigroup.co.jp/corporate/policy/measure_02.html
Sumitomo's Enasave vs. Bridgestone's Regno
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