What swathdiver said:
Towing capacity is not nearly as important as Cargo Capacity (including the tongue weight of your trailer), length of the trailer and wheel base. If your planning on long trips on the interstate I wouldn't recommend a trailer longer than about 25 ft and less than 6000 lbs fully loaded. And that's with a good WDH with antisway and LT rated tires. Even with that you're pushing the limits depending on how experienced you are at towing. That's why you see most trailers towed by pickups. The longer wheelbase is what makes the difference.
Watch out for loads with a high sail area, that short wheelbase will get tossed around more than a longer tow vehicle.
Towing capacity is not nearly as important as Cargo Capacity (including the tongue weight of your trailer), length of the trailer and wheel base. If your planning on long trips on the interstate I wouldn't recommend a trailer longer than about 25 ft and less than 6000 lbs fully loaded. And that's with a good WDH with antisway and LT rated tires. Even with that you're pushing the limits depending on how experienced you are at towing. That's why you see most trailers towed by pickups. The longer wheelbase is what makes the difference.