Several times comments have been posted that the offset on a 405 differs from the 322, what is the difference and what would the effect be? letters not necessarily in the right order

nobody know  letters not necessarily in the right order

L322 's have had two standard offsets of 53mm & 58mm. The 53mm offset is the same as some RRS wheels and sticks out 5mm more. The wheels with the 53 offset were common between the RRS & L322 and fitted to some 2006my L322's in 18". These were twin 5 spoke 18" alloys and looked better on the FF due to giving a slightly wider stance.

These genuine alloys are not to be confused with the cheap fake ebay RRS Stormers which had stupid offsets and look poo on a FFRR

I have no idea what the 405 offset is but if you can find out and compare it to the above it may give you a good indication for fit