My first thought is this seems a little high for tires not normally seen on large coaches. I think of Goodyear, Michelin, Toyo etc. I don't know much about Kelly. I paid only slightly more for Michelin XZA2 a little over a year ago. I had Goodyear and the Michelins improved the drive of the coach significantly.
I drive in extreme heat a lot, so, I like to change out the front tires more often trying to prevent problems. I would consider other brands on the rear since there are extras.
2005 Monaco Executive 45 CAQ
Cummins ISX 525