D1 Spec BBK installed on E60

OYG

OYG

Well-Known Member
My ride is 2009 E60 LCI 520i. The stock front brake pads and rotors were due for replacement 2 months ago. Having considered the probable costs for replacing these stock parts and toying around the idea of going the BBK route, i decided for the later:goodup:. After researching the various makes and combinations available in the market, i took the plunge to get the Taiwan made D1 Spec BBK in view of my limited budget.

Stock Brakes:
Front 2 Pistons (57mm dia) giving 5103mm2 of braking area, 310mm x 24mm rotors
Rear 2 Pictons (42mm dia) giving 2770mm2 of braking area, 320mm x 20mm rotors

D1 Spec:
Front Big 6 Pistons (36mm, 32mm & 28mm dia) giving 4876mm2 of braking area, 330mm x 32mm 2-piece floating slotted rotors
Rear 2 Pictons (42mm dia) giving 2770mm2 of braking area, 330mm x 24mm 1-piece slotted rotors

The front kits were installed 2 months ago and i am very happy with the performance since day 1. 3 weeks after the installation, i ordered the rear kits that had just arrived and been installed 4 days ago. Both front and rear kits came complete with direct bolt-on design calliper brackets and rotors/hubs and stainless steel braided brake hoses. The front and rear kits took a little more than 1 hour to install each. I am posting this to share with fellow brothers and sisters as there was no or little information on D1 Spec BBK reviews on the internet.

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View attachment 52158
 
Re: D1 Spec BBK installed on E60

Nice rims and also bbk..

any bbk is better than stock, esp E60's stock..
 
Re: D1 Spec BBK installed on E60

Red_Bean_Bun;1012237 said:
Your BBK has a smaller braking area than stock .... Is it a typo ?
Click to expand...

No, it is correct and not typo. The brake bias is shifted slightly to the rear but somewhat compensated with a larger front rotor. My idea is to maintain a same or similar brake bias. The other main benefit of BBK is to low down the running temperature with bigger and thicker rotors, floating disks, etc. I am not too technical, my apologies.
 
Re: D1 Spec BBK installed on E60

Stock E60 front rotor is 324mm, not quite possible that front smaller than rear
 
Re: D1 Spec BBK installed on E60

Jason8822;1012270 said:
Stock E60 front rotor is 324mm, not quite possible that front smaller than rear
Click to expand...

I having the same specs as OYG.

What's the damage? Mind sharing?
 
Re: D1 Spec BBK installed on E60

Oh. So our cars are not specced with 324mm disc.
Thanks for clarification.
 
Re: D1 Spec BBK installed on E60

Is e improvement in braking significantly better than stock?
Cos at 330mm, it's a small caliper for a 6 pot. Rotor size n braking area isn't any larger than stock.
 
Re: D1 Spec BBK installed on E60

horrible;1012644 said:
Is e improvement in braking significantly better than stock?
Cos at 330mm, it's a small caliper for a 6 pot. Rotor size n braking area isn't any larger than stock.
Click to expand...

The rotor (not calliper) dimeter is increased from 310mm to 330mm with slightly reduced front piston diamters (braking area). This caused the rear bias to increase slightly i.e. rear rotor is increased from 320mm to 330mm but piston diameter remains the same. The end result is a shorter stopping distance (in theory) with well distributed and accurate brake pedal feedback (my own feel). I feel more confident braking.
 
Re: D1 Spec BBK installed on E60

horrible;1012645 said:
By e way, nice rims.
Damn new too. Sticker still intact
Click to expand...

Thank you:).The rims are more than 1 year liao....
 
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