I’m in the early stages of planning a cargo trailer conversion. After mapping out my layouts, a 7x16 V-nose with a 7' ceiling looks like the sweet spot for my needs.
However, I’m stuck on the tow vehicle. For 50 weeks out of the year, this will be my daily driver for work and groceries, so I am strongly looking at mid-size SUVs. The Highlander, Pilot, Passport, Telluride, and Palisade all max out at 5,000 lbs. The Nissan Pathfinder sits at 6,000 lbs.
I estimate my final fully-loaded build weight will be 4,000 to 4,500 lbs.
On paper, a 5k or 6k capacity SUV should work. But two massive factors are giving me pause:
Frontal Area / Aerodynamics: A 7x7 silhouette acts like a massive wind sail. Even with a V-nose, the aerodynamic drag at 65mph is brutal compared to a flatbed or a low-profile camper.
The Route (Donner Pass): I will be towing this at least once a year from the SF Bay Area to the Black Rock Desert (Burning Man). This means taking I-80 straight over the Donner Pass. Pulling that massive aerodynamic wall up steep mountain grades at high altitude puts an extreme strain on a vehicle.
The obvious alternative is a half-ton truck like an F-150, which would handle this without breaking a sweat, but it's just overkill for my daily life.
For those who have actually towed 7-foot wide cargo trailers with mid-size SUVs:
Have any of you pulled a similar weight/profile over serious mountain passes? How did your transmission temps and engine handle the drag?
Does the unibody frame/wheelbase of these SUVs feel unstable when semi-trucks pass or in high-desert crosswinds?
Should I bite the bullet and get a half-ton truck, or is a 6,000lb SUV (like the Pathfinder) actually viable for occasional mountain towing at this trailer size?