You'll get lots of "opinions" on the life of the tires. Michelin says their tires are good for 10 years, but need to be inspected. What ever MH you choose, check the tire date codes. My 06 MH is built on an 05 chassis with 05 tires. BTW, if the MH is built on a 22K Workhorse chassis, make sure the brake recall was done.
Fran, Mary & Zoey (silver Cocker)
2006 Itasca Sunrise 35A, 2005 W-22, Allison 1000 5 speed
'13 Ford Focus ST or '10 Prius on Master Tow Dolly 80THD-SB or '00 Jeep Cherokee 4-down