Yep agree with the other dudes, if you are not changing your tyre size than it won't matter wich rim you run.
I would be looking for disco 1 rims as they look much better than defender rims and they are wider as well which will give you more on tyre width.
However I'm guessing defender rims may be cheaper.
I picked up another four disco steelies for my defeder for $60ea a while ago and had them painted
