I thought about this as World Superbike Race One at Laguna Seca was running. Up front, the two Kawasakis seemed stable and unbothered. Right with them at first, and also on Pirelli tires were the Ducatis of Chas Davies and Davide Giugliano. To keep up, the Ducati men were having to slide and spin, pushing limits, asking the maximum from their tires. Soon they tipped over. Nicky Hayden, losing half a second per lap back in 3rd place, was on the very same B/B tire choice as the two leaders. After the race he would say he was unable to brake as he would like, and as the early tire step forced everyone to go slower (0.8-second a lap slower by lap 2!), his gearing became more and more wrong as the laps unfolded. He said this "made my engine go flat," meaning that he could no longer use its whole power curve. Same tires, but very different results.