CST Xpedium Ampero outer tyre. For the last couple of years, there've been more and more E-bikes on the market and the tyres of an E-bike wear out faster than normal ones due to the fact that an E-bike rides faster. An E-bike must meet higher demands and the tyres suffer from more abuse. There are even E-bikes tested that ride up to 50KM per hour. If you need a tyre for your E-bike, then the Xpedium Apero is the best choice you can make as it's specifically made for these type of bikes. The 60 TPI carcass is supremely strong and with a woven breaker layer it's virtually impossible for sharp objects and stones to puncture the tyre. The Xpedium Ampero is tested by the Dekra and it has the ECE standard up to 50KM /hr.