Mtb tyre sizes 26 x 190 26 x 2125 28 x 215 29 x 220 26 x 215 26 x 210 26 x 195 26 x 200 29 x 215 26 x 220 29 x 190 26 x 225 inches sizes etrto 54 559 50 559 57 559 55 622 diameter inches 29 inch application cross country types folding tyre tubeless series geax aka