The Everest Double Decker Cycle Rack will accommodate the following wheel sizes - 16 in. (40.6 cm), 20 in. (50.8 cm), 24 in. (61 cm), 26 in. (66 cm), 27 in. (68.6 cm), 27.5 in. (69.9 cm), 29 in. (73.7 cm), and 32 in. (81.3 cm).