A couple of thoughts:
Horseman120247 wrote:
.......When these tires blow the whole tread and center section atre coming off and the only thing left on the rim is the two side wall discs.....
If the only thing left is the 2 sidewalls, then those are air loss type failures - commonly called a "RunFlat". If you had the tread, you'd find the puncture. Needless to say, punctures are random type things and not the fault of the tire.
Oh and for those who say that it is impossible for 4 tires to have this in a short time - I've estimated the risk of a single individual vehicle having 4 punctures in a month as 0.017% - and since there are about 225 million vehicles in the US, then that's just under 4,000 people who will experience that this year. Unfortunately, Horseman seems to be one of those people.
Nevertheless, I would recommend that ALL failures be reported to NHTSA. They will not launch any investigations unless there are a substantial number of failures being reported.
I'd also recommend that Goodyear be contacted. They will want to have the tire(s) for examination. Contact them even if you don't have the tires. They aren't going to fix anything without a substantial number of reports.
And lastly, I'd recommend the trailer be weighed - Worst case condition (with everything one can think of on board, including full water tanks.) It's best if each tire is weighed (or calculated), but if not, I'd use a 10% value if the vehicle is weighed by axle, and 15% if all axles are weighed at the same time. Compare that to the load carrying capacity of the tires (and I think tires shouldn't be loaded to more than 85% of their rated capacity).