We purchased a 2006 CRV, 2 wheel drive. Before we bought, we confirmed in the owners manual that came with our vehicle, that it can be towed 4 down. There are guidelines to not exceed 65mph, stop and run the engine every 8 hours, etc.
Will be hard for Honda to dispute what they put in their own owners manual.
Ray & Paula
'99 Newmar Mountain Aire 3758, Ford V10, 3 Pugs, the toad is RTOAD - 06 CRV