Upgrading axles

Can you not find a 16" rim with your existing bolt pattern? There should be no need to change axles.

My first questions would be what are you trying to accomplish ? What is the weight of the trailer on the axles, and what axles are currently under it ?

You shouldn't need to upgrade the axles. I put 16" wheels on my Desert Fox, which had 15" wheels originally.... but the DF had heavy axles, 5200lb, with 6 lug brake drums.

Does your AF have 5 or 6 lug wheels?
5 lug wheels might be hard to find in a 16" size.

If you can't find 16" 5 bolt wheels (if your AF has 5 bolt wheels, swapping brake drums over to a 6 bolt pattern would be the easiest method.

Ok my reason is only to allow for 16" wheels, I have 5 lug wheels right now and can't find 16" wheels for the lug pattern. I assumed I would have to swap axles I never thought I could just change the drums and brakes.

Call your axle manufacturer and get what you need. Probably AL-KO or Dexter. Probably just new hubs and drums. And honestly a new axle drum to drum may only be a few $$ more. Easier to Craig's list your old stuff drum to drum.

And if money is easy consider going disk brakes.... :B

Another question... Is there a way to tell what kind of axles I currently have or do I just phone arctic fox ?

Should be on the axle tube.

Check etrailer dot com to get some ideas on hub/drums.

if you have adequate axles ( my bet is it has 3500 pound axles ) and are simply wanting to go to a tire that has adequate load capacity and a higher speed rating, then an example would be to switch to goodyear cargo g26. In a 225-15, they have 2470 lb. capacity. So that is nearly 10,000 pounds of load capacity under a trailer with what, about 6000 pounds sitting on the axles, all loaded to go ( isn't your trailer about 7000 GVWR ) ??