08+ STI rear Brembo caliper and rotor question
 

Finally getting around to changing the rear calipers out for Brembo ones to match the fronts (CTSV Brembo Kit). I know that 08+ STI rear calipers are a direct bolt on to the BRZ hub, but I wanted to explore options for the rear rotors. I've seen a couple threads where STI rotors are redrilled to 5x100, but would the OEM performance package rear rotors from 17+ cars be a viable option or are they too small? Thanks for any input.

Faction fab makes a rotor that is both 5x100 and 5x114.3

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From a quick search I believe the standard rear rotor is 290mm and the PP rear rotor is 316mm. No idea how that would fit in your application.

As the owner of a 2008 STI I can tell you the specs on the rear rotor as I just replaced them last month

here are the specs:

Rotor Diameter: 316mm (12.44")
Rotor Height: 63.5mm (2.5")
Nominal Thickness: 20mm (0.787")
Minimum Thickness: 18mm (0.709")
Lug Holes Quantity: 5
Lug Holes Size: 12.8mm (0.5")
Bolt Circle: 114.3mm (4.5")
Hub Hole Diameter: 58mm (2.28")

The Centric part number is 125.47030

The centric part number you want is: 125.47043, this is the PP specific rotor, with the correct bolt circle: 5x100

The one TwinFTW listed is for 5x114.

Another option is from DBA rotors, the part number is: DBA 42656-10, these are dual drilled though.

Carid and Rock Auto are the only places I could fine these PP rotors without paying an arm and a leg for the oem ones

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