Читать книгу Proficient Motorcycling - David L. Hough - Страница 43

With a narrow, round-profile tire, the CP doesn’t move far to the side. But with a wide, low-profile tire, the CP shifts farther sideways than with a round-profile tire, for the same lean angle. And the farther out the CP, the greater its off-center drag. The CPs of both front and rear tires shift laterally as the bike leans over, so the sizes and profiles of front and rear tires are interrelated. That’s one reason changing tires to different profiles, or changing just one tire to a different size or profile, can change how the bike handles, for better or worse. It’s very fashionable these days for cruisers to wear extremely wide rear tires, but handling usually suffers when function takes a backseat to style.

When a wheel is leaned into a curve, the contact patch on the tire shifts toward the edge of the tread. CP shift is greater with a wide, low-profile tire than with a narrower tire.