X 1 3 ⁄ 8 BS 22" 22 x 175 Both tire sizes have the same inner diameter of 622 mm and can therefore be fitted on the same rims In Europe, 28 inches is a traditional size for touring bicycles In many countries it is even the most frequent tire size used Against this backdrop, Schwalbe deliberately chose to focusFeb 28, · Schwalbe tubes are designed & manufactured to retain air pressure considerably longer than their competitors Not only is each individual tube inflated & inserted into a mould to ensure that there is even wall thickness & excellent air retention, they are also stored under pressure for 24hrs to test air retention Valve length of 40mm for Standard versionKenda Designed for Your Journey On the road, on the trail or on the racetrack, you can count on Kenda quality Our tires are engineered for performance and value across a wide range of interests and applications Schwalbe Tires 37-451 inner tube