Hi Germaniks,

Nice to meet you at C&C on the weekend, everytime I have been listening to music since I have wondered how it would sound on your systems. Truly great Audio going on in that 540i of yours .

I have been using Black Diamonds on various cars of mine for years and have tried they're full range from the G6 disc (6 grooves) all the way to the combi which is drilled and grooved and never had a problem with warping. I have used all drilled discs before that did warp exceptionally quickly however that was my own fault for buying cheap crappy ebay discs. The G6 are the entry level discs and combined with the Predator fast road pads they could be €319 delivered for the front set. Prices then go up €339 for G12 (12 groove) and then €359 for the combi setup which is drilled and grooved. All grooved are the same price as the combi.

I cannot stress enough how good these are once they have bedded in, bite is instant and they are very durable for sure. If you need any more info please just ask.