These new tires are not for future models but might be put on futuristic models by Volvo, but only under one condition - that they switch over to Michelin's new
Tweel™
Looking like something out of the movies, you would not be stupid if you had to take a second glance. See what I mean.
Engineers at Michelin's American technology center here envision a future in which vehicles would ride on what they call the Tweel, a combined tire and wheel that could never go flat because it contains no air.
The tiremaker has high expectations for the Tweel project. The concept of a single-piece tire and wheel assembly is one the company expects to spread to passenger cars and, eventually, to construction equipment and aircraft.
Benefits of Tweel™:
The heart of Tweel innovation is its deceptively simple looking hub and spoke design that replaces the need for air pressure while delivering performance previously only available from pneumatic tires. The flexible spokes are fused with a flexible wheel that deforms to absorb shock and rebound with unimaginable ease. Without the air needed by conventional tires, Tweel still delivers pneumatic-like performance in weight-carrying capacity, ride comfort, and the ability to "envelope" road hazards.
Michelin has also found that it can tune Tweel performances independently of each other, which is a significant change from conventional tires. This means that vertical stiffness (which primarily affects ride comfort) and lateral stiffness (which affects handling and cornering) can both be optimized, pushing the performance envelope in these applications and enabling new performances not possible for current inflated tires. The Tweel prototype, demonstrated on the Audi A4, is within five percent of the rolling resistance and mass levels of current pneumatic tires. That translates to within one percent of the fuel economy of the OE fitment. Additionally, Michelin has increased the lateral stiffness by a factor of five, making the prototype unusually responsive in its handling.
Future of Tweel™ Technology:
For Michelin, Tweel is a long-term vision that represents the next step in a long path of industry-changing innovations. Fifty years ago, Michelin invented the radial tire and there is no question that radial tire technology will continue as the standard for a long time to come. Michelin continues to advance the performance of the radial tire in areas such as rolling resistance, wear life and grip. In the short-term, the lessons learned from Tweel research are being applied to improve those conventional tire performances. In the future, Tweel may reinvent the way that vehicles move. Checking tire pressure, fixing flats, highway blow-outs and balancing between traction and comfort could all fade into memory.
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