I am currently looking for rims for my rex and i don't really understand offsets. The rim that I'm looking at is the new enkie mm2, it is avilable in both 16X7 4-100/114. 42SM and 16X7 4-100/108 42AM. What is the difference and what would look better on a CR-X, (I have the ww kit)

 

what you have posted are not offsets, but lug patterns, both of those wheels should work fine, since they both have the 4x100 lug pattern..

 

Anything between +40 and +45 will work and handle good