Originally Posted by David C
Are you sure?
Because the 330 disc is 32mm thick and the 305 caliper only takes 28mm discs...
No, I'm not. Just heard it as a rumour and attributed it to the fact that there is a big number of 305mm calipers that cannot be sold because it is impossible to fit them with the standard non-GTA upright.
Maybe the disc is not the stock GTA but an aftermarket non-Brembo one because Brembo did not have a 330x28mm disc with 5x98 PCD last time I checked.