I am glad you are having good luck with your "chinese tires". Some of us have not been so lucky. My first set, that came with the trailer, had less than 800 miles of them and developed bubbles in the sidewalls. Stopped at a tire store in Dodge City, Kansas and bought 4 new tires. When I looked at the sidewalls and saw "Made in China" on them, I told the owner that I was not comfortable replacing bad Chinese tires with more Chinese tires. He told me that he had sold hundreds of these tires with no problems. Well, in less than 1200 miles, I had a blow out of one of the tires that resulted in $2500 worth of damage to my trailer. The very next day, a tire on the other side had complete tread seperation. Luckily, no damage to the trailer, other than a bit of bending to the knee braces on the frame. I immediately went out and bought Goodyear tires, to the tune of $1300 dollars. So, with less than 2500 miles on the trailer, I have been through $2000+ in tires and $2500 dollars worth of damage to my trailer, all attributed to Chinese made tires. I believe I was as conscientous as anyone about the maintenance and tire pressure checks. I even went out and bought a new Dewalt air compressor, to the tune of $275, and the trailer never moved so much as a foot without all tires being checked and brought up to the proper pressure. Whenever I stopped the tires were checked and never allowed to run at less than the optimum pressure. And still I ended up with problems. Best of luck with yours, I was not so lucky.
Fred