Iposted a Vital MTB forum thread in May of 2014 asking " Why are flat tires something we still see these days?" Some riders were plagued by the typical race-robbing issues of pinch flats at the first two World Cup DH events. "We have $10,000 bikes but we can't keep air in the tires if they're hit just right?" I was frustrated and I'm not even a racer getting hosed or a team sponsor watching tens of thousands of dollars go down the drain on a single race effort. Lo and behold, industry-leading tire designer and tester, Frank Stacy, was already on the case. Frank is the lead man behind some of...