Wheel sizes?

Hey guys

I know im new but was hoping someone could help me with wheels. I currently have the 17s on my V70 T5 S2 and have seen a set of 18s but the only info i have is that they have 5x108 bolt configuration. They apparently came off a V70 SE Sport but dont know if Series 1 or 2. Was there a change in bolt configs or offset from the S1 to the S2?

Big thanks in advance

the bolts themselves changed but the wheel specs stayed the same

Cheers mate that helps massively so looks like ill be getting some 18s then this weekend if i can haggle hard enough!!