15x7 20mm Offset They come in different offsets but I was seeing in that "wheel combos know to fit" thread the concern seems to be back spacing. Honestly I'm not 100% sure how to figure that out as it's not listed in the description of the wheel. Thanks in advance Eddie
They're both measurements of the same thing from different reference points. Backspacing isn't dependent on wheel-size (rim to wheel mounting surface distance), so to get to it from offset (centerline to wheel mounting surface) you just need to know the wheel width. Luckily you have all this information.