dockmasterdave wrote:
I won't go over about 80% of what the factory says it can tow, for fully loaded trailer weight. There is "it can tow it" and then there is "it tows it comfortably and I will actually use it". If it is not comfortable to tow, why buy it ?
the 80% idea was IMHO appropriate 20 years ago. Back then towing at capacity often meant turning off overdrive and grunting up hills at 45mph or so.
IMHO at least trucks built in the last 10 years or more are pretty capable of running at GCVWR comfortably accelerating decently, towing hills fine. The newer engines and drivetrains have way more HP and torque than decades ago.
Often the biggest issue today is making sure you aren't over TV GVWR when you are below the claimed trailer weight limit. TV mfg assume 10% tongue weight and no cargo, while Trailer MFG design for 15% or so tongue weight. So it is easy to go over TV max tongue weight before you hit Trailer weight limit.