The 2013 Ram 2500 series has a 1 and 11/16 inch axle nut on it. This is a very large nut and it is designed to hold the wheel hub to the rest of the axle. Usually to find a socket large enough You will need to visit an automotive specialty tool store. When You remove the axle nut on a truck You will most likely need an impact driver. These are installed very tightly and are designed to hold the wheel hubs in place so they are difficult to get off of the vehicle. When You reinstall them You should use a ratchet and sockets with a very long handle to be able to get it torqued down properly.
Scott T.
April 10, 2020
The axle nut is 1 11/16 "and the other three bolts (not nuts) are 14 mm 12 points on the 2013 ram 2500.
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