Bike winter tyre sizes 26 x 2125 26 x 190 26 x 210 26 x 195 26 x 220 26 x 200 26 x 225 inches sizes etrto 54 559 55 559 50 559 57 559 diameter inches 26 inch applications city trekking touring type clincher reflective puncture protection continental vectran karkasse continental vectran breaker weight 800 g series continental topcontact winter max tire pressure 4 bar tpi 180