Hi all I replied that I also had a problem with rotor warpage in 2008. I think I may have finally solve my problem. I went to get a new set of rotors for my A32 3.0L. To my surprise I noticed that the 3.0L discs were much thicker than the ones I had. So I said to the shop let me see the 2.0L and the 2.0L rotor was much thinner than the 3.0L. I went to check my warped rotor and the min. thickness in 20mm and measured is 21.2mm. The new rotor min thickness is 24mm and new is 26.2mm. It is so much thicker and will be able to dissipate much more heat and there will be much less heat shock loading to the rotors cause it has much more metal. So the factory fitted the wrong discs as I had this problem since day 1 even with new rotors it would judder after 20,000km and dealt with this problem for 13years!
So if any one wants to try out my new setup, rotors are made by TRW RM145/pc. 1set RM145x2= RM290. Bendix General CT RM95. Make sure you get the 3.0L disc and measure that its 26.2mm thick.
Bendix General CT, highly recommended for the price you pay. Really good bang for the buck brake pads. Lives up to the description that the titanium coating help faster bed in and is good straight out of the box. With new rotors and pads, the braking power is already good. Just run in the pad for about 50km of slowing down 60-40km/h, 80-60km/h , 100-60km/h, 110-60km/h, 110-40km/h and 120-40km/h. With some time for the brakes to cool. Do it at night and on highway is the best.
Breaking power feels about 20-30% better than OE and the bite and the smoothness of the pad is really good. The breaking power is the same or slightly more than the OE Nissan Akibono and the EBC Kevlar pads that I have tried.
Will update again when the car has done 20,000km and see if my problem comes back.