Can't help you with the 22.5s but I'm running three sets of General Grabber AT/2. I have 35s on my truck and 265s on my wife's and kids car. I swear by them. That said I just ordered Hankooks for my Moho. I'm running a set of 22 inch Hankooks on my Suburban also.
why did you go with hankook over generals
for your RV generals are cheeper
I never looked into the Generals for the rv. My neighbor has Hankooks and seems like a lot on the forum have them also. Kinda just went with the flow. Have Goodyears on now and not going to pay that much for them or Michelins
I have run Generals, Continentals, Good Year, Dunlop, Michelin, Bridgestone etc. 22.5s in fleet operations - local delivery and over the road with no significant differences in performance or mileage as long as a strict tire and air pressure maintenance program is maintained. I have no experience with the Korean and Chinese name brand tires though.
2007 Winnebago Journey 34H
Toad, '08 Ford Taurus X
Blue OX, Aventa
US Gear UBS