Wood wheels in good condition are not a safety problem. The tragic accident in Utah was not caused by a failed wheel. The wheel was destroyed as a result of the rollover, not the cause of it.
All of us in the T world are so sad about this awful event. It is not the first, others have been lost in T accidents, even recently. Please keep your T in good condition for safety. If you have questions, find help here or with a local T club chapter. Remember, these cars drive on technology a hundred years old. When you get out of your Toyota with eight air bags, antilock brakes, traction control, and seat belts and then get into your T, drive with the utmost caution. The future of our hobby is in your hands at that time.
Fordially, Erik