Tire coupling hubs and elements connect two drive shafts to transfer power while accommodating misalignment and minimizing shock and vibration, helping protect equipment from damage. Tire coupling assemblies consist of two hubs or flanges and a flexible element, or tire, that fits between them. Internal teeth on the hubs mate with external teeth on the element. The tire element has a split that allows it to be replaced without removing the coupling from the shafts. Tire couplings do not require lubrication and are easy to install, making them ideal for use with pumps, fans, compressors, mixers, and generators.