Khe premium mac 15 folding park bmx tyrethe mac tire is the worlds first freestyle folding tyre with a lower rotating mass and kevlar reinforcement these tyres are designed for performance kevlar strips allow the tyres to be inflated up to 120psi and still retain their original shape features perfect size to use for park riding on the rearfront wheel or for flatland on front wheel kevlar beaded for protection durable compound lengthens the life of the tyre low rotating mass reduces the