By my calculations (combined TT Weight, Cargo, Passengers, etc) we are at the top of the published Towing Capacity. Volvo doesnt see it that way - In the documentation, they dont count TV payload. That said, the published tongue weight of the TV is on the light side (250# Tongue weight for trailers 2,600# and up). Our TT tongue weight is over 300# so we use a lighter WDH when travelling (but I use a standard hitch taking it back and forth to storage). In the pictures above, its hooked up to a std hitch. It feels soft (a little bouncy) without the WDH. With the WDH, it has a very confident feeling and it pulls well.
The owners manual gives specific guidelines for long, heavy towing (dont travel more than 1 hr when temps exceed 85 degrees, etc) and the transmission has a temperature gauge.....so I'm confident in the set-up.
For us - we use common sense. We know we're loaded close, so we avoid extended trips, high speeds and long trips through the mountains. That works perfect for us.
I must say - we get lot's of stares and smiles as we pull into the campgrounds
Thanks for asking exJay!