This is just my 2 cents, but I have Tow Max tires on all kinds of trailers over the years and have never had a tire failure due to a bad tire. Sure I've had flats like everybody else. Maybe I've just been lucky. Now I would never suggest that there are not bad tires out there brand new from the factory, but I will share some knowledge I have and mistakes I've seen being made when it comes to trailer tires, and trust me when I say that I am "anal" when it comes to vehicle maintenance: 1.) Set air pressure to the max load cold P.S.I. (for example ours is 80# cold) I've had pro tire installers argue with me that it should be set @ 70# cold to allow for expansion, but that is wrong! They need to be set at the max load pressure. Period. 2.) Always check tire pressure when tires are cold, and not after they have been setting in direct sunlight for hours. Morning is the best time. 3.) Use a GOOD tire pressure gauge not the buck 99 ones from your local auto parts store, but a good one. (I use Miltons) 4.) DO NOT exceed the speed rating of your tire! Most trailer tires are speed rated at 65 MPH. I know, I know, I know nobody ever drives faster than that, however I set my cruise control on 62 MPH and have had countless trailers blow by me, and so have you. 5.) check the tire build date. Just because the tire is new to you don't mean the tire is new. It could have been setting in a warehouse for years. The date is in code and sometimes only on one side of the tire usually between the DOT code and the DY (date year) its a four digit number. The last two numbers are the year they were made. I won't buy a tire thats more than 2 years old. 6.) RV tires sit in one place for extended periods of time under the weight of the vehicle so the side walls wear out much faster than say normal car tires. We put new tires on our Toy Hauler every 4 years regardless of mileage.
Lastly if you have had one tire go flat or run at very low on pressure for any distance that tire and the other tire on that side is probably damaged because one is overheating because its low, and the other is carry all the weight on that side and more than likely overheated as well.
Again I'm not doubting anyone having tire issues, I'm just trying to help get the most of what we got. Stay safe everyone.