True, but its one of those things Id expect to design in (call me a novice, but...) at a fairly early stage. I thought stuffing them with some kind of foam (possibly inflating them afterwards?) was the usual light weight technique to allow them to run flat. Id gladly have a few holes drilled in my armour (in the right place) in order to stop the wheels being so vulnerable.

But then, what do I know? Just a bit surprised that such a proficient robot was vulnerable in so simple an area.

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Fluppet