Right i am having replace my rear brake pads and discs on my 06 octy VRS and im stuck at what size they should be. Using euro car parts i have a choice of either 282mm or 272mm diameter disc, but then on Mtec performance they offer me 286mm or 272mm disc.

So which size do i go for?

I've just replaced my 06 vrs rear discs and they were 286mm.