They *should* fit....but as Steve sez, it appears that almost every MGB/MGC out there has the differential centered differently. If these rims are Minilyte, K&R, or Panasport deigned for the MG, I'me betting that the offset will be correct. I have 15" K&R on my '69 MGC...and experience rubbin on the passenger inner fender lip when hard turning to the right. FYI.