As mentioned above....Goodyear Endurance. I've had Endurance tires on my coach for 5 years now with nothing but good reports. Getting ready to head for Quartzite from Cali soon so I'll replace them mostly for age reasons and not so much tread....though it's pretty close on the tread too. I've heard all good stuff about Maxxis tires too. My understaning is that Maxxis tires are made in China, but is an American Company. Difference is Maxxis has there own factory with there own employees and quality control. Also, it is my understanding that the vast majority of Chinese tires are made in one factory and rebranded to match whatever company is requesting the run of tires. I don't know anything about Michilin Trailer Tires.