Bicycle tyre size 28 x 140 inches size etrto 37 622 diameter inches 28 inch applications touring city terrain electric bike type clincher reflective puncture protection smart guard flat less weight 890 g series schwalbe marathon schwalbe unplattbar min reifendruck 4 bar max tire pressure 6 bar gummimischung endurance tyre profile hs404 max load 105 kg colour black puncture protection