I can't answer your question, but I'm worried that you may be looking at the Euro Car Parts website? If so, look elsewhere to find far cheaper discs that actually fit properly (I'm just waiting for them to collect a rear pair of Eicher discs that were just slightly wrong enough to foul the backplate). Have since discovered that I can buy superior Blue Print discs on eBay for half the ECP price (even when there was an ECP 60% sale on).