Mtb tyre size 275 x 225 inches size etrto 57 584 diameter inches 27 5 inch applications all mountain terrain type folding tyre karkasse liteskin weight 585 g series schwalbe racing ralph min reifendruck 18 bar max tire pressure 37 bar tpi 67 gummimischung schwalbe dual tyre profile hs425 max load 110 kg