Salut Ted
Presumably 3 are ET40 and one is ET35?
To clarify the correct wheel sizes (from the workshop manual) are:
N/A and SE: 6.5J x 15" ET60
S2 7J x 16" ET60
UK ebay had a full set of original SE wheels (with old tyres) which just sold for £150.
See
this site to calculate the impact of having a different offset to 60.
One or two others on here (such as m100sandra) have fitted non standard wheels, so they may be able to tell you what offset they bought and what effect it had. Her thread is
here. As you can see (middle page 2 of thread) she got Speedlines which actually came from France! But can't find what offset she ended up with, although she did have to buy longer studs.
Hope this helps a bit
John
La vie passe vite: vivez la avec élan.
Elan SE turbo 1992
Emira 2023
Mercedes Benz C200 estate
Lotus Evija Danish edition