High and ultra-high performance tire market share for 2015 MTD keeps an apples-toapples comparison intact

摘要

Tracking high and ultra-high performance shipments is not as easy as it once was. Fifteen years ago, the definitions were clear: High performance referred to H-rated tires 70-series and under. UHP tires were anything V- and Z-rated. And UHP tires were a niche market, a sub-segment of the high performance category. Since then, W (up to 168 mph) and Y (up to 186 mph) ratings have been introduced for tires on more exotic sports cars. What do you do, however, when winter tires come with a W-rating? Remember when snow tires were Q-rated?