Z32 rotors are 280mm, yes. If you look at the pads when Z32/Skyline GT 4-pots are installed you'll see some of the pad is not contacting the rotor. A workaround is to use the Infiniti Q45 front rotors from late models (1997-2001). They are 296mm which is the same diameter as the Skyline GTS25t. More pad contact = more better braking
