A method of making a non-pneumatic tire (100; 300; 400; 500) comprising the following steps: providing a first substantially circular sheet of polymeric material, including an upper ring, a lower ring, and a plurality of spoke portions extending from the upper ring to the lower ring; forming a first predetermined tread shape (310; 410; 510) along a circumference of the first substantially circular sheet of polymeric material, the first predetermined tread shape (310; 410; 510) including a shape defining at least one of lugs, blocks, grooves, ribs, and sipes; providing a second substantially circular sheet of polymeric material, including an upper ring, a lower ring, and a plurality of spoke portions extending from the upper ring to the lower ring; forming a second predetermined tread shape (310; 410; 510) along a circumference of the second substantially circular sheet of polymeric material, the second predetermined tread shape (310; 410; 510) including a shape defining at least one of lugs, blocks, grooves, ribs, and sipes; placing a reinforcement (150, 180; 330, 340, 350; 420, 430) on the first substantially circular sheet of polymeric material; placing the second substantially circular sheet of polymeric material on the first substantially circular sheet of polymeric material such that the reinforcement (150, 180; 330, 340, 350; 420, 430) is sandwiched between the first sheet of polymeric material and the second sheet of polymeric material after the step of forming the second predetermined tread shape (310; 410; 510) along the circumference of the second substantially circular sheet of polymeric material; providing additional substantially circular sheets of polymeric material; forming a predetermined tread shape (310; 410; 510) along a circumference of a plurality of the additional substantially circular sheets of polymeric material, the predetermined tread shape (310; 410; 510) including a shape defining at least one of lugs, blocks, grooves, ribs, and sipes; placing the additional substantially circular sheets of polymeric material on the second substantially circular sheet of polymeric material after the step of forming the predetermined tread shape (310; 410; 510) along the circumference of the plurality of the additional substantially circular sheets of polymeric material, until a tire (100; 300; 400; 500) is built. providing a first substantially circular sheet of polymeric material, including an upper ring, a lower ring, and a plurality of spoke portions extending from the upper ring to the lower ring; forming a first predetermined tread shape (310; 410; 510) along a circumference of the first substantially circular sheet of polymeric material, the first predetermined tread shape (310; 410; 510) including a shape defining at least one of lugs, blocks, grooves, ribs, and sipes; providing a second substantially circular sheet of polymeric material, including an upper ring, a lower ring, and a plurality of spoke portions extending from the upper ring to the lower ring; forming a second predetermined tread shape (310; 410; 510) along a circumference of the second substantially circular sheet of polymeric material, the second predetermined tread shape (310; 410; 510) including a shape defining at least one of lugs, blocks, grooves, ribs, and sipes; placing a reinforcement (150, 180; 330, 340, 350; 420, 430) on the first substantially circular sheet of polymeric material; placing the second substantially circular sheet of polymeric material on the first substantially circular sheet of polymeric material such that the reinforcement (150, 180; 330, 340, 350; 420, 430) is sandwiched between the first sheet of polymeric material and the second sheet of polymeric material after the step of forming the second predetermined tread shape (310; 410; 510) along the circumference of the second substantially circular sheet of polymeric material; providing additional substantially circular sheets of polymeric material; forming a predetermined tread shape (310; 410; 510) along a circumference of a plurality of the additional substantially circular sheets of polymeric material, the predetermined tread shape (310; 410; 510) including a shape defining at least one of lugs, blocks, grooves, ribs, and sipes; placing the additional substantially circular sheets of polymeric material on the second substantially circular sheet of polymeric material after the step of forming the predetermined tread shape (310; 410; 510) along the circumference of the plurality of the additional substantially circular sheets of polymeric material, until a tire (100; 300; 400; 500) is built.