Wanted to tell you about this multiple times and completely forgot. The easiest solution is to add small collision cylinders as extra UCX_ meshes on to the hull itself. Sprockets and idler don’t move so it’s fine to have their collision as part of the hull.
Alternatively you can use idler and sprocket with collision mesh and enable it, only collision not physics. Check how it’s done for M113 and Ripsaw. The main difference from adding their collision to hull is if you want them to have a different physics material, like I did. I’m not sure if it’s a good approach for something like a Tiger I as sprockets on it are huge.
Maybe try both approaches and see which makes more believable behavior.
Tiger I looks really cool! Even if it glitched through floor 
It’s fun to see so many moving parts turning into rather smooth ride. How heavy is that thing?