Used Coopers in the past on other RV's, they were fine.
Replaced Michelin's on current MH with Hankooks.
The Michelin sidewalls were cracking after one year. 3 1/2 years on the Hankooks, not a crack on the sidewall of any of the Hankooks.
Not sure what the BEST tire is, but most likely will replace the current Hankooks with Hankooks when the time comes. Same nice ride as with the Michies, and for less cost.
Hankooks came as OEM on the Sonic, nice auto tire as well.