In June, 2015 I installed Maxxis ST225/75R15 LRE and went to Alaska and back (4th of July to Labor Day, 2015). I had no problems at all with the suspension-axles, brakes or tires, which is more than I can say for some of the Class A's in our caravan. With all the frost heaves, mud highways, chipseal and chuck holes the suspension was great, which is more than I can say for the slide seals and entry door seals.
I too have a set of almost new Tiremax tires, same size just LRD's. You can PM me if interested.
Mike, Mary & Boomer
2015 GMC Sierra 2500HD SLE CC Duramax/Allison
2014 Jayco Eagle 338RETS w/Equal-i-zer 14k