True what JARblue said re:The Cost.
Also there's usually less brake force used on the rears when on the track. I disable traction control, I really hate a computer nanny telling me to slow down on a track. The comparable 2-piece rear from Z1 is like $648 for a pair, 2-piece, slotted vs $198 1-piece, slotted Z1 Sport rotors.
The 1521s from Carbotech are quiet like stock brake pads and similar in compound to the XP10/XP8s. Less trouble switching to track pads using 1521s as dailys, altough still require a good bedding exercise when changing pads. I have found the rotors do not need to be scrubbed to key the surface between pad switchings. They last a good long time. My rears just wore out at 56400 miles whereas the fronts are still going strong. The Z's traction control is appropriately intrusive on the street and really makes more use of the rear pads to keep the Z tracking straight in adverse weather.
I hope this helps you in your decisions. I have been really happy with the Carbotech pads and slotted rotors.
Cost and common sense dictate alot of the decisions I make for Z based purchases. Some would not agree with this. For instance: I see plenty of Z owners replacing the stock or Bose stereo HU for a double din touch screen. Quite costly. I simply added a Bluetooth receiver to my factory Bose HU and I am happy. I can stream all the content I like no radio surgery required. Just $40-50 from Amazon for parts.
Happy modding!
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Corsairprime
2014 Nismo #462, GunMetal Grey, GT-R Start Button, AAM S-Line/R-Line intake and S-Line exhaust, Berk HFCs, Osiris Tuned at JoTech
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