I replaced the hexagonal wheel nuts on the 2010 4/4 with two eared spinners. As an engineer I just used my trusty wooden mallet to give them a few well-placed hits. Then drove down the road and back and then retightened them again - never had a problem! If they are not tight enough you will hear a clonk when you reverse out of the garage.
And yes the 4/4 was built light with no spare wheel; so I always carried, but never used, and small tire compressor and a can of sealant. I've done the same with the Plus 4 and the Six. Pays to also carry a rabbit's foot!!
