Hers is my Suggestion to the problem, as you can see on the watch picture there is an attached a piece of steel zigzagging in between each watch link. This is where you can mount the little pointy things that grip to the tanks roadwheels (someone help me out here). now the outside of the watch links could be made out of titanium but the inside could be rubber, acting as more of a shock absorber and a weight sver than an actual track piece. Have the pads bolt in so its a sinche to replace the rubber. Im sure there is a way to replace the metal bits on the outside, nothing comes to mind though.