The point I was trying to make was; Everyone now knows about bulged tyres, and not too many people now paint them straight black. But when you see a nicely weathered P-51 model, for instance, the tyres may be bulged, but they have perfect, unworn treads.
It's not unusaul for an aircraft to have one new & two worn tyres in peacetime, never mind the middle of a war. We're all trying for realism, no one seems to have thought of this before though.
Pete