Actually, the Vikhr tubes were empty (looks like a graphics glitch from doing a replay, since I had used all of my external stores flying the mission), I had no more AA missiles on board, and I of course used the two heavy missiles (K-29T and Kh-58U), so the plane wasn't very heavy on landing. This is a typical scenario for RTB and I bust the nose wheel every time. Landing in no wind with no weapons loaded and minimum fuel just isn't realistic for the campaign missions, so why should I do any testing in that configuration???
I think in real life that with the way I'm doing it, the plane would much sooner tip over in the turn than the tire be ripped off the rim. There seems to be no resistance to turning the nose wheel when it's firmly planted on the ground, so you can unrealistically jerk the wheel to the left or the right in this game. I think this is the root of the problem. The strength of the tire might be correct after all?