No, sorry Clive. I'm talking about the original standard rear discs.The centre bore sits on the spigot ring.
With the old disc removed you can see the difference between the new 280mm and the old standard 240mm.
This is what I remember when I was struggling to get the old discs off, and yet if you look at your picture of the two discs side by side (above) it's obvious that the old one has a bigger centre hole than the new one. That's what I can't get my head around.Ah. I'm not sure mate. I will try to remember to have a look tomorrow when I take the other one off, although I was sure it was a tight fit. Will let you know.
I have fitted the nearside and had her out for a drive. Considering the discs are brand new and not bedded in yet, the braking is improved a lot. I will let the brakes bed in a bit and then will get the back brakes tested.
Yep. Have some pics. Just need to download them. Will do later.