Abstract
In order to accelerate the expansion of a large and narrow tire possessing superior ecological performance towards next generation eco-friendly vehicles, authors have developed and evaluated exclusive technologies for the enhancement of large and narrow tire technologies. By utilizing the exclusive technologies, a series of intermediate-size large and narrow tires as a new trend is proposed for encouraging easier adoption of large and narrow tires not only for the next generation of eco-vehicles under development or planning but also for a derived vehicle with small modifications..