The schwalbe rocket ron evolution tyre is the saviour for mountain bike racers that wan39t enough grip on the trails without slowing them down and this tyre does just that and more as well as being tacky enough for the trails this tyre is super lightweight and durable which is ideal for bikers that want to keep weight down without compromising strength that is needed to tackle the off road trails the rocket ron evolution uses a triple nano compound to enhance its strength and a 127 evo c