I did put some of that spray on rubber grip stuff on my BullDog's tracks once. It wore off in a couple of hours but it did allow the tank to grip like crazy. you could buy a spray can and spray your tracks every once in awhile.

The Tiger models handling characteristics and reliability of its running gear is much like the real life version, it wasn't very good. The chevrons added in '43 and ice cleats helped out. The Tiger runs much better when it's weight is up over 8lbs. Our 211 Tiger is currently 11lbs still about 1/3 of what its scale weight should be but it runs much nicer. The stock Heng Long Tiger suspension springs start to compress around 13lbs or so.