A system is provided for refitting a tire system on a four-wheel-drive compact tractor which typically comes equipped with a set of industrial tires mounted on standard industrial size wheels. The tractor has a frame size falling within an industry classification of extra large frame, large frame, mid-frame or small frame. A set of replacement agricultural tires or turf tires is provided. The industrial tires are replaced with the replacement agricultural tires or turf tires without changing at least the front wheels on the compact tractor. The replacement tires are selected so as to maintain a front tire overspeed within manufacturer specified ranges for the majority of tractors falling within the industry classification.