First post here although some of you might know me/ know of me as I joined the ASN Nurburgring trip recently in the Volvo S40.
The "S4" isn't so much an S4 at the moment but basically a rolling shell project car.
Plans for this are rather different from the norm, although for now I'll keep them under my hat for now
Anyhow, on to the brakes...
My last "fast" car had billet KAD 6 pots, 330mm 2 piece discs with alu bells and they were awesome. Obviously, the car will be doing a fair amount of track work. I want to stick to 17's so have been looking at the biggest disc I can get away with - 345mm.
I just happen to have some 4 pot AP racing calipers (brand new in a box!) laying around so I'll get some brackets made to fit these for now, until some 6 pots come along.
Comparison shots with the KADs-
To keep things as cost effective as possible, I plan to use OEM 345mm one piece discs. What is the difference between the 8P S3 disc and B6/7 S4 disc? I'm correct in thinking the S3 is 5x112 and 345mm? How about bore and offset?
Mock up of the AP caliper on the 321mm B5 disc-