I"m trying to find the length and width of chains that will fit on 15 x 19.5 R4 Tires. I previously posted this question asking for the length and width directly but to answer this question the chains would have to off the tractor and laying flat on the ground. With chains on the tires, can someone measure the length of the chain going from side to side across the tire tread and the diameter of the circle the chain makes on the side of the tire? Any help would be appreciated.