Tires and cleaning robots

Abstract

Tires for use in a cleaning robot, the tire comprising: - a tire body (10) wherein a plurality of gear teeth and tooth grooves are arranged on an outer circumference of the tire body (10), the tooth teeth being arranged alternately along the outer circumference of the tire body (10), wherein two adjacent gear teeth define one of the tooth grooves; wherein the plurality of tooth grooves comprises a first tooth groove (24) and a second tooth groove (25), wherein a dimension of the first tooth groove (24) along a circumferential direction of the tire body (10) is larger than a dimension of the second tooth groove (25) along the circumferential direction of the tire body (10).