Not a single problem with the two sets of GY G tires both sets were used for 5 years. The set I took off this last summer were in good condition and the spare had never hit the road. I sold all 5 tires and wheels for $1,000 on Craig's List. I bought 4 GY H tires and 17.5" Alcoa wheels and a steel wheel with a cheap tire for the spare. I bought the set mounted and balanced with the weights taped to the inside of the wheel from trailertiresandwheels.com for $3,200 delivered to my door.
The earlier GY G tires that came on my Dad's 96 HH Premier had blow out problems and GY stepped up and paid for the damages no problem. The newer GY tires he replaced them with and the last set have given him no problems at all.
If you have a problem with brand X they may give you a new tire but they will not pay for damages like GY will. So if you have a problem with brand X then it is a claim against your insurance company.
I will stick with GY for my trailer tires!