F8X Brembo BBK Swap on E46 M3

[0-60motorsports]

I think in the future i would love to do this conversion due to the ease of parts availability even though i love my ST60/40 Setup.

[EthanolTurbo]

I think in the future i would love to do this conversion due to the ease of parts availability even though i love my ST60/40 Setup.

Don't bother, it's 20+ lbs heavier than stock.

[0-60motorsports]

Don't bother, it's 20+ lbs heavier than stock.

The F8X conversion? Really? Might as well get new discs from Girodisc and some new pads from Random suppliers and call it a day with the ST60/ST40. A fresh powder coat to go along with it as well.

[dHam_Slow.46M]

The F8X conversion? Really? Might as well get new discs from Girodisc and some new pads from Random suppliers and call it a day with the ST60/ST40. A fresh powder coat to go along with it as well.

Yup

I think you nailed it with boat anchor, those 380mm are 24.91 pounds by themselves, and stock 348mm ZCP/CSL is 17 pounds. A Brembo GT BBK using 355x32 rotors is 16 pounds with rotor hat.

[0-60motorsports]

Yup

Thanks for that!

[maupineda]

The extra weight is a kill. You cam use the stock rotors with the f3x calipers if you mod the pad a bit to clear the hat.

however I think the best are either the Megan RS calipers or Aston’s DB9. The latter will have exact same clamping force. Megan’s will be a bit lower.

rear, stock, or if you fill like doing some mods, rear cayenne calipers, or e82 135 rears wilt with also e92 rotors.

[9kracing]

Don't bother, it's 20+ lbs heavier than stock.

So 5lbs per corner?

How much weight does a forged wheel save?

[EthanolTurbo]

So 5lbs per corner?

How much weight does a forged wheel save?

My Volks RE30's are 17.2 lbs and 17.8 lbs.

In comparison...

M67 Double Spoke Polished (OEM 19)
8 J x 19 ET47 12,6 kg (x 2.2lb/kg = 27.72 lbs)
9 1/2 J x 19 ET27 13,3 kg ( x 2.2lb/kg = 29.26 lbs)


M67 Double Spoke Crome Shadow (OEM 18)
8 J x 18 ET47 11,2 kg (x 2.2lb/kg = 24.64 lbs)
9 J x 18 ET26 12,2 kg (x 2.2lb/kg = 26.84 lbs)

M163 Cross Spoke Painted (ZCP)
8 J x 19 ET47 10,5 kg = 23.1 lbs
9 1/2 J x 19 ET27 10,9 kg = 23.98 lbs

Also, as a frame of reference... 996 Brembos weigh about 20 lbs less than stock. So a 996 Brembo setup is roughly 40 lbs less than an F8X blue brake conversion.