Tire for use in running on soft ground and excellent in ground- contacting property

摘要

Disclosed herein is a tire for use in running on the soft ground, which comprises a pair of sidewalks, a tread portion toroidally connected with both of the sidewalls and a carcass reinforcing the whole tire. The tread portion is provided with plural rows of projecting blocks or lugs in a circumferential direction of the tire, which are isolated from one another by traverse grooves, such that the total ground- contacting area of the blocks or lugs to the total area of the tread is in a range of 15 to 30%, and is characterized in that in the bottom of each of the traverse grooves is provided a recess having the maximum depth equal to 5- 20% of the height of the adjacent block or lug for facilitating the flexural deformation of the tread.