I run Maxxis on my travel trailer and so far have had good luck with them. With the TT I change the tires every 6 years simply due to the fact that the rubber compound molecules break down and become weaker with time, making a catastrophic failure more likely. Other factors may hasten this degradation like UV light, heat, overloading, etc.. Check the numbers molded into the tire near the DOT info...first 2 digits are the week and next 2 digits are the last 2 digits of the year. 2417 would be the 24th week of 2017.
Since my TT has el cheapo vacuum formed plastic wheel wells, I prefer to err on the side of caution and change them on a time-based interval as opposed to a wear-based interval. Also, I never tow above 60 mph (yeah, I'm THAT guy).
Many folks on the Jayco owners forum use Maxxis tires. I believe mine are made in Thailand.