[R33]

Ok. Here's the deal:

Model Inlet wheel size Wheel trim size AR (comp) AR (ex) Power
GTSS 46.6mm 60.1mm 0.60 0.64 280ps
2510 47.7 60.1 0.60 0.64 300
2530 47.7 60.1 0.60 0.64 320
2540 51.7 76.2 0.60 0.64 350
GTRS 51.2 76.2 0.50 0.64 400

That's it.