Good grief folks. They are a two piece rim that uses a lock ring to hold the tire onto the rim.
The rim does not split. Instead they will remove the lock ring to take the tire off the rim and install the new one.
They will inspect the rims and lock rings and will clean them to make sure the locking surfaces are in good shape.
You will need an inner tube with that type rim.
215 / 75 R15 or 205 / 75 R15 will work fine
