26x1 3/8 /1.75 (37/47-559/590) AV 40 mm All 0181491 Continental 26" 37-559, 26 x 1 3/8 40-559, 26 x 1.50 44-559, 26 x 1.60 47-559, 26 x 1.75 37-584, 26 x 1 1/2 x 1 3/8 44-584, 26 x 1 1/2 x 1 5/8 37-590, 26 x 1 3/8 47-590 47-597, 26 x 1.75 CONTINENTAL Tour 26" If your bike gets a flat tire on the go, you won't get any further. That's why it's best to take a suitable spare inner tube with you on your bike ride. This way you can quickly continue your ride and repair the flat inner tube during a break or at home. The numbers on the side of the tire provide information about the correct inner tube. The first two digits before the hyphen indicate the width of the tire in mm, the digits after the hyphen indicate the outer diameter of the tire, which for the Tour 26" is 26". Incidentally, the Schrader valve on the Tour 26" is 40 mm long. Width inch 1 1/2 x 1 3/8, 1 1/2 x 1 5/8, 1 3/8, 1.50, 1.60, 1.75 ETRTO 37-584, 37-590, 40-559, 44-559, 44-584, 47-559, 47-590, 47-597 Main color black Valve type auto (AV) Type/kind Article Valve length 40.0 mm Wheel size 26 "