Hey all. Before you know it, so get will be here and living in the need, we get our fair share of snow. With 53k miles on my P-rated Duratrac, I'm getting ready for some new shoes, but obviously want to get my money's worth on this set. I've been measuring different spots on the tread and have plenty of meats everywhere except at the tie bars that connect the middle and edge blocks. What spot would you consider to be too worn and needing replcement? Here are some photos. Any input is appreciated. I average a 90 mile round trip conure M-F with no issues in the rain.