Side armor would prevent driver kill from 600 yrds from 4x.5 guns. Besides, I hit him on the spot that smokes (Exact center of the tred). I bet this could be easily replicated offline, but I'm having technical difficulties.
Just use a pintle to find the spot that puts out a grey puff on the track, kill it so it's a fresh Tiger, get an M16, and unload on the spot. If the track pops, keep firing. I bet it will go "boom"