View Full Version : B5 1.8tqm upgrade to b5 s4 brakes!

01-29-2006, 07:25 PM
Ok just want to know everything that is needed to put B5 s4 brakes on a non S4 B5.

so far i have:

s4 calipers
s4 wheel bearing housings,(knuckle)
s4 wheel bearings
s4 Hubs

i dont think the s4 control arms are different in size. let me know if i am wrong. Are they lighter or stronger at all??
Also will there be and changes in the vehicles allignment with this setup??

Do a4 1.8t axles fit into the S4 hubs???

any info greatly appreciated. thanks in advance.

03-12-2006, 03:04 PM
Why not just do a boxster caliper on A8 rotors? Cheaper, proven easily completed for under $800 if you source the parts yourself. You would also have a larger selection of pads. S4 pads are expensive and limited choices.

02-22-2007, 09:49 PM
The only real benefit to this swap is the lighter aluminum S4 uprights.