As a rule of thumb, overall capacity is limited to the capacity of the tire.
Trailer tires and hubs must be matched to axle capacity and have the same bolt pattern.
Standard Trailer Bolt Circles are:
4 hole x 4” bolt circle
5 hole x 4-1/2” bolt circle
6 hole x 5-1/2” bolt circle
8 hole x 6-1/2” bolt circle