Mtb tyre bike winter tyre size 26 x 240 inches size etrto 60 559 diameter inches 26 inch application mtb types tubeless folding tyre puncture protection race guard karkasse snakeskin weight 850 g series schwalbe ice spiker min reifendruck 2 bar max tire pressure 4 bar tpi 67 gummimischung winter tyre profile hs379 max load 115 kg