Schwalbe Thunder Burt Addix MTB Tyre - LiteSkinThe Schwalbe Thunder Burt Addix MTB Tyre is the fastest rolling tyre made by Schwalbe that is intended for Off Road riding. Offering extremely low rolling resistance and being very light Low Profile, Fast Rolling GripThe tread pattern comprises of a central section with a higher than normal amount of flat, small central studs; providing low profile, fast rolling grip. The outer studs have a wide profile to aid grip when cornering, but will not have any effect on rolling speed or efficiency on straighter flowing sections of the Trail Here is a comparison between the ADDIX compounds that shows how they improve performance in relation to the VertStar, TrailStar and PaceStar Compounds Features:Compound: ADDIX SpeedConstruction: LiteSkinExecution: XC, MarathonSidewall Protection: LiteEPI: 127Ideal Terrain: Hard pack, mix,Bead Type: FoldingTyre Pressure: 2.00 - 4.00 Bar (30 - 55 psi)Weight: 435g (29 x 2.10")Technologies: ADDIX Speed: The compound ideally suited to XC Race specialists rolls even better than the previous PaceStar compound and has a considerably extended service life. LiteSkin: The LiteSkin tyre carcass forgoes Snakeskin but still has a reinforced bead core. These tyres can be made to run as a tubeless setup but additional sealant may be required. Evo Line: The very best possible, highest-grade materials available, combined with the latest technology to create the highest standard in Schwalbe tyre creation and construction Buy Schwalbe Wheels & Tyres from Chain Reaction Cycles, the World’s Largest Online Bike Store.