Series 1, 2 and early 2a are same pattern but different nut/stud than series 3 and later 90/110 which share same bolt pattern and lug nut.
This pattern and lug nut carries forward to the RRC and the series 1 discovery.
p38 RR and series 2 discovery have a different pattern and lug nut again!
Not sure about current models.
In short 109 parts may fit 90/110 depending on year, if you are using a 15/16" wheel wrench then you are working with early 1/2/2a .
1 1/16" wheel wrench on series 2a/3 90/110 disco/rrc.
Clear as mud???