Tires
The NTSB briefing in my opinion all but ruled out tires as a root cause. Only one main wheel tire was blown (right side inner wheel) and Mr Sumwalt explained that the track marks indicated it was OK until late in the event when the plane got its other damage. No mention of treads ripping off either; NTSB said there was no debris on the runway and the damage to the wheel was described more like "a gash".
Nosewheel is under the fuselage so not examined yet. But I'd think that if it had been wobbling due to shimmy, it would have left oscillating marks on the runway. No mention about that either; Mr Sumwalt said NTSB has found nosewheel track marks on the runway but that was somewhat beyond the point where main wheels started to "leave rubber on the runway".
The FDR information together with detailed wind data becomes more and more interesting.