Single Axle versus Double Axle

[valleyduo]

I've found the single axles are a little easier to overload the tongue weight on. The advantages are less tires, brakes, and bearings to deal with. Single axle is also easier to back into a tight space than a dual axle of the same size. Single axle is overall going to be lighter weight. One 7000# does not weigh as much as two 3500# axles. As long as your careful loading it, single axle is no issue.

[john221us]

I wanted a double for stability (both towing and if I got a flat). It does get a little worse gas mileage and have more maintenance (as mentioned above).

[Doppleganger]

We were looking for small, which, unless we're getting a toy hauler, are pretty much all single axle. I'm good with it.

[Homersimpson]

A single axle will have max weight of about 3500#, which can also be towed by a smaller truck. Even if the gas mileage seems low while towing, the mileage will be better than a big truck when not towing.

[bikendan]

Originally Posted by Homersimpson

A single axle will have max weight of about 3500#, which can also be towed by a smaller truck. Even if the gas mileage seems low while towing, the mileage will be better than a big truck when not towing.

Not true anymore.
For example, the very popular single axle E Pro and Geo Pro trailers. Out of the 12 different models, only two have GVWRs at or under 3500lbs. The other 10 are well over.
And of the very popular single axle No Boundaries trailers, none of 12 models have a GVWR at or under 3500lbs.
This has been a bad trend that fools the uneducated public into buying a smaller trailer, to pull with their small tow vehicle. Very few of these smaller vehicles have the payload or hitch capacities that these heavy single axle trailers come with, when loaded.