Thanks for your replies, Ive changed pivots for wheels, idlers and sprockets (now pivots are in line: -154 for left and 154 for right) and checked suspension arrays (Y coords have the same values), made sure that tangents array has the same number of elements (in my case 19), but no effect :/ However, Ive noticed something - when I`ve moved suspension handlers towards center result was like this - treads were OK, but wheels…:
And when I`ve moved suspension handlers back to wheels:
Maybe I`m wrong, but it looks like treads shape is connected with suspension handlers, just like wheels?