16x7 BBS RK offset

[browntown]

I have BBS RK wheels in 16x7 (Bought them off Ravins a few months ago)

From searching I gather the optimal offset is et25 for the 7" rim. (please correct me if I'm wrong) But I can't seem to find the offset stamped anywhere on the rim. Ravins' thought they were et33 but he also said he didn't need spacers.

Do any of these numbers in the casting equal offset? There is a 25 in one of the stamps but god knows what it means. The goal is to squeeze on a set of 225's, not sure if that changes my optimal offset or not. Any help appreciated.

PICS:

[Court M3]

no et # or E #? at all

[browntown]

I cant find any.

[browntown]

went back to the garage, after all that work taking pics, I should have just looked at the other three wheels. The other three have et35 clearly stamped on the inner lip with RK012. Why would one wheel not have that mark? Possible it was repaired/repainted? Maybe a knockoff to complete an incomplete set? Uggh, I'll take some measurements tomorrow to make sure its identical in dimensions to the other three.

[Court M3]

maybe it was a replica?
*EDIT* what size tires are on there now? Willing to split them?

[browntown]

balled 215/45 azenzi's, not worth anything, I was planning on taking a box knife to them and getting them off the rims so I can clean up the wheels. I'm hoping its not a replica, that's more attention to detail in castings than I've ever seen in a replica. Every other casting is there, I'll clean em up, and look in good light. I'm guessing it was just painted over, or maybe a replacement rim that was ordered at one point. dunno. I'll update as I measure them accurately this weekend.