Porsche Brembo Calipers and STi Rotors

[BNZ]

What's the min wheel size to fit over the porsche/wrx setup ?!

[Spectra1]

I had some 16 inch wheels and they were to small. I think the consensus is you need 17inch rims or greater.

[BNZ]

That's acceptable.
Oh one more thing,with smaller/different offset brackets,what do you guys think do the calipers fit the ST185 rotors in order to use 15 inch wheels (for gravel spec setups) ?

[bozo-merlin]

what do you guys think do the calipers fit the ST185 rotors

Overheating a rotor is not a good idea
try to find a 290mm rotor, it fits under some 15", 30mm thick is better too

[gtfourtc]

there are a couple rotors that might work for a smaller package, also the standard boxster calipers are slightly smaller so would fit a smaller rotor better. AS for the bracket I think is doable I t would have to change a little so the caliper is not spaced out as far from the hub. going down to a 290mm rotor you would have to lose about .75" off the bracket. this only leaves about .5" of threads for the caliper bolts. prob enough but it would be a safer bet to switch to a stud that screws into the bracket and the use a nut to secure the caliper. pretty much the way stoptech does all their brackets.

[BNZ]

Is there any difference in terms of spacing/dimensions between the front and rear porsche calipers ? They look 90% identical but the rears are cheaper listed on e-bay from breakers

[gtfourtc]

while they have the same 130mm bolt centers, they are different sizes also the front calipers have 36/40mm pistons and the rears have 28/30mm pistons. What this means is the rear calipers are much too small to use on the front. Ebay can be good if you find a deal but those dont come around all the time. If you check out car-part.com you can find the 911 calipers for 150-200 each and the standard boxster calipers i found a bunch for 100 each.