R33 brembo rear rotor VS. R32 GTR

[cobrAA]

Brembo is 300x22 and R32 GTR is 297x18.

I doubt the 3mm difference in diameter makes a difference but what about the thickness ? Can I use R32 rear instead of those 300x22 ?

[Terrh]

They looked real similar to me, but the R33/34 rotors did look a lot thicker.

I'd say you could use one in a pinch but the proper rotor will be best.

[Daryl @ RightDrive]

I would not use the improper rotor, use the proper ones.
The cost difference between the two is not very much.

[r33_gtst]

That's the best two responses that could be provided
A small difference is still a difference.