I have the Carlisle Radial Trail HD on my T264SR. Also have towed them on a T2475 in the size you are looking at. Actually they are on our flatbed trailer as well. All are dual axle no problems, tow well. I have never read anything about not using on dual axle. Oh also had some on our old popup, single axle, less weight but towed well. I guess I have tested a few on 3000# to 10000# trailers, no problems. I do check air pressure before every trip and cover tires when stored outside for extended periods. All tires except the popup have balancing beads inside, that may help too vs. no balancing.
Current Camper: 2006 Sunline T-264SR
Previous Camper: 1998 Coleman Mesa
Tow Vehicle: 2002 Chevrolet Avalanche 2500, 8.1L, 4X4
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