Interesting to see what has been posted, I bought the basic grooved disc from leda and after they had sent me the 312mm discs twice they agreed to give me a pair of two piece discs for the same price as they had f**ked me about so much, when they arrived the finsh of the disc surfce was very un even as if it had vibrated when being turned i stuck them on anyway with the high spec pads and they worked ok for a while then started getting vibration when braking, scoring and groves in the discs utter shite ! changed pads for a set of OMP ones from ebay , much better and have worked ok but the discs still score bad, guess i wont be going back to leda, just glad I didnt pay 600 quid for them, bloody spanish jobs worths.
regards
bob