Well I haven't used them.....Yet!  I am in the  process of putting the  HSR2SA's on my MH for all 6 tires.  I have a friend who owns a trucking company who swears by the continental's in general and these tires for motorhome applications.  In my case I will have almost 3000 lbs of extra capacity on the front axle.  The HSR2SA's are also a J rated 16 ply tire.  Sorry I can not answer how they work yet, but I feel good about my purchase.