Gary,
I had a forum item about it a few months ago. I believe it was a cumulative damage issue due to a slight front misalignment problem which was not manifested in pulling to one side. It tracked straight. But I went to the Ft. Worth facility for other relatively minor work (A/C) and they did a general inspection and found a slightly loose tie-rod and replaced it, requiring an alignment (expensive), on completion the alignment outfit tech said that I might have a slight pull while the front, and particularly the left, accommodated itself.
Still tracked straight, steered slightly better with regard to return to center. Seemed fine. Over a year later, this year, in very hot temperatures (but not the first time) I think the tire carcass overheated (runaway) and it detonated like a bomb. But since it was reduced to the appearance of a shredded Brillo pad, I will never know. Right side fine. Returned 800 miles to Texas to Ft.Worth and had 365s put on the front and the coach repaired. My wife says it's quieter and smoother, and I can say it steers better, but requires a tad more steering wheel turn for the same response. Planning in the near term to replace the tags with 365. Expensive.