Hi I am looking to replace my rear Brake discs, on a Gold Mk4 1.8 GTI 20v (T reg) Just changing the rear for now Looking at options available on websites such as http://www.jkm.org.uk/performance/jkmdisk-vw.htm It shows that the rear should be 232mm, but have seen people say that the recommended size is 288mm, The ones on that website also show that the discs are solid rather then vented, does it matter if I use vented or not? I have looked a GSF also, but not really sure what I am looking at as there are so many varieties. Can anyone help? I may also need to fit Calipers on the rear, does anyone have any recomendations?