Michelin Power RS 150/60 R17 (66W) Rear TyreMichelin Power RS 150 60 R17 (66W) Rear Tyrev The Michelin Power RS is engineered to raise the bar clear across the board performance without compromise. Michelins Adaptive Casing Technology uses a single ply carcass at an angle close to 90 to reduce rigidity and increase grip at the crown of the tire, yet folds that single ply over on itself on each sidewall to stiffen it, resulting in less sidewall flex and better tracking through corners. To