would these be the BBS CHs by any chance? you'd need the adaptors of course, there are scare stories with them, some saying that the wheels should be bought for the car intended etc, and some say it fines, down to you how it drives really. the adaptors plug into your main fitment with their own bolts then you can fit the wheel to the adaptors with their own bolts, this is how i understand it and seen them put on, i think the push the wheels out a little as well