Originally Posted by iverson
Does anyone know what the factory wheel size is for a '77 Overlander. I would like to pick up a steel wheel for a spare. There must be a cross reference wheel available.
The drums on your Airstream are for 12 inch brakes.
The drums have 6 lugs.
The correct steel wheel size is 15 inch, with 6 holes on a 5 1/2 bolt circle, zero offset.
The wheel must be rated at 2600 pounds or more, to be compatible with the originals.
The above specs are assuming someone did not change the axles out to something different than original production.
Junk yard wheels do not fit the bill, since it's near impossible to determine the weight rating, or it's past history.