This listing is for 2x Continental Ruban Wired tyres Type: WIRED Compound: PURE GRIP Colour: BLACK WITH REFLEX WALL Tubeless Ready: NO E-Bike Rating: E-25 Pressure: 40-54 PSI Weight: 805g Size: 27.5 x 2.30 (ETRTO 58-584) From Rural to Urban The energy-saving SUV allrounder that gets you to both Rural and Urban. The partner for your commute, running errands and the weekend tour. PureGrip Compound is derived from an activated Silica compound. The name PureGrip does exactly what it says; exceptionally good grip and durability are the distinguishing features of this compound.