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i asked the same question and the answer is yes but aragorn said they use a smaller piston than the a4 ones
so as long as you have ate calipers in good working order already there's no point it would just be more work bleeding brakes
i am curious as to what difference a couple of mm in piston size makes, never heard of s3 owners swapping to a4 calipers
The 288mm pads use the same disc surface as the 312mm ones
Simple physics.
Force = pressure x area.
Pressure is related to the force your leg would apply to the pedal.
Area is the size of the piston on the caliper.
given area = pi x r^2, going from 54mm to 57mm is about 10% reduction in braking force for a given pedal pressure.
going from 288 to 312mm disks only gains you about 8%.
You dont really want to be using the S3 calipers.
Scott: the pad surface area is the same, it just sits further out from the centre with a bigger ventilation gap.
You probably have 280's on there scott dont you?
110 TDi's got 288's.
It is a 288 pad.
On the 288 disks theres not as large a gap between the central hub, and the pad surface: