[kach22i]

Yokohama

Aerodynamic simulation technology was developed in 2010 to enable air flow around tyres to be simulated under the conditions envisaged to be encountered in actual use (i.e., with tyres mounted in the wheel wells and revolving), and the scope of simulation is presently being expanded to include the entire vehicle.

Nissan, Yokohama Rubber, Denso and JAXA to Speak at Exa Japan


http://www.yrc.co.jp/csr/en/report20...commodity.html
Figure 1: Flow of air around a vehicle with conventional tires (left: side view; right: back view)


Figure 2: Flow of air around a vehicle with new aerodynamic tires (left: side view; right: back view)