[Logicoeur]

Originally Posted by awmenard

So possible change of direction.

I know this has been done before many times by other BMW owners and a friends of mine has a set.

May just go with 4 pot 996 Brembo's front and back.

What prompted the change?

[awmenard]

Originally Posted by Logicoeur

What prompted the change?

Mostly availability, it's easier to go with these that are local, I'll save on shipping.

As well I know that these have been used many times on other BMW models.

Lastly I think it just looks nicer to have that Porsche logo on, even tho they will get repainted.

[awmenard]

More changes!!!

After doing some research those previous Porsche calipers use a smaller rotor that I would like to use. The visual affect just wouldn't be there.

So I did some more research and this is what I've settled on.

Front: Porsche 18z 6 pot Brembo Cayenne turbo calipers ($200.00/pair) The Porsche rotor for that specific caliper is a 368mm x 36.

I have two BMW options, X5 E53 356mm x 36 or 7 series F01 374mm x 36. Probably going with the 2nd option.

Rear: Panamera base rear 4 pot Brembo's($200.00/pair), Porsche uses a 330 x 28 rotor. This one is a little trickery. Possible options for the rear is BMW F30 345mm x 24 ( will need a custom plate between the piston and brake pads.

2nd option is to use a Camaro ZL1 or SS V8 rear rotor. It uses the same BMW 5x120.

Center bore is smaller and would need to get machined from 67.1 to 72.56. These calipers have a 365mm x 26. That size would match up nicely with the 374 front.

Audi guys have been swapping these brakes for years. The main thing is really finding the right rotors for the swap.

Here are a few Pics of the calipers.

[Milkman670]

I just bought 5he mperformance kit plus proper rear matches rotors for $2300 us, includes all hardware, wear sensors, ss lines, everything. Done!

[cfm56d7b]

I thought these videos will be of interest to anyone researching the complexity of brake design:

AP Racing: behind the scenes look at the company (which supplies brakes to Bugatti among other car manufacturers)

AP Racing Radi-CAL II Brakes

[Tchao]

Originally Posted by awmenard

More changes!!!

and this is what I've settled on.

Here you go again quoting rotor size like it matters.

Before you kill yourself, or worse others around you... Answer me this:

What is your bias ratio after this swap? If you dont know...Dont do it. And its obvious you dont know

[awmenard]

Originally Posted by Tchao

Here you go again quoting rotor size like it matters.

Before you kill yourself, or worse others around you... Answer me this:

What is your bias ratio after this swap? If you dont know...Dont do it. And its obvious you dont know

Well in this case why ask the question?

If you do not plan on being helpful why waist your time writting something?

You make it sound like the car will explode because of a brake change.

But I suppose all BBK will put your life in danger.

https://www.racetechnologies.com/pro...0?vehicle=7489

I was looking at these kits, do these use the same brake Bias as original? Also I see no mention of upgrading the Master cylinder or to upgrade the brake booster.

Can you please share your thoughts?

[Tchao]

Here is a basic, very very basic calculator, you need to account for much more than just this to make a system as successful as the one you replace...

http://www.tceperformanceproducts.com/bias-calculator/

And I doubt you have ANY of that besides how colorful your calipers are and if your rotors will look good behind your chrome dubs.

[Tchao]

Originally Posted by awmenard

You make it sound like the car will explode because of a brake change.

But I suppose all BBK will put your life in danger.

https://www.racetechnologies.com/pro...0?vehicle=7489

I was looking at these kits, do these use the same brake Bias as original? Also I see no mention of upgrading the Master cylinder or to upgrade the brake booster.

Can you please share your thoughts?

Those calibers & kit have been chosen because they have already calculated everything for you. They will work on your existing brake system and wont screw up your bias and make you wreck on the first panic brake application you do.

IT HAS NOTHING TO DO WITH ROTOR SIZE. I told you this before, this is the fourth time now. I told you to research piston size Front to rear. Im still trying to help you not kill yourself or others. You're welcome.

[awmenard]

Originally Posted by Tchao

Here is a basic, very very basic calculator, you need to account for much more than just this to make a system as successful as the one you replace...

http://www.tceperformanceproducts.com/bias-calculator/

And I doubt you have ANY of that besides how colorful your calipers are and if your rotors will look good behind your chrome dubs.

Here are a few things I have taken into consideration.

MC bore/booster piston surface area of the calipers.

Calipers pad shape/size in comparison with the annulus of the rotor being used for proper pad coverage without excessive pad/rotor over hang.

Offset of the center line of the caliper by the caliper mounting points and how the spindle/knuckle mount points are so that the caliper can be centered over the rotor ring.

But I appreciate your assistance

[Tchao]

Remember a team of highly educated engineers designed your brakes and put them though a lot of rigorous regulatory testing to ensure you have the safe system. What you replace them with should be an upgrade, not downgrade. So make sure its an upgrade...

[tomppa]

Originally Posted by Tchao

Those calibers & kit have been chosen because they have already calculated everything for you. They will work on your existing brake system and wont screw up your bias and make you wreck on the first panic brake application you do.

IT HAS NOTHING TO DO WITH ROTOR SIZE. I told you this before, this is the fourth time now. I told you to research piston size Front to rear. Im still trying to help you not kill yourself or others. You're welcome.

So, big brake kits are available for front wheels only or for both axles. Does it mean the piston area doesn't change? Or if it does - you can increase the area in front only. If not, then it's the rotor size that is different?

I think Jaguar brakes could be just as good as BMW but we just need to pay that 200% extra because BMW. Only Italian exotics come more expensive.

Glad OP found a complete BMW set - less hassle like that.

[LucasL]

Originally Posted by awmenard

More changes!!!

After doing some research those previous Porsche calipers use a smaller rotor that I would like to use. The visual affect just wouldn't be there.

So I did some more research and this is what I've settled on.

Front: Porsche 18z 6 pot Brembo Cayenne turbo calipers ($200.00/pair) The Porsche rotor for that specific caliper is a 368mm x 36.

I have two BMW options, X5 E53 356mm x 36 or 7 series F01 374mm x 36. Probably going with the 2nd option.

Rear: Panamera base rear 4 pot Brembo's($200.00/pair), Porsche uses a 330 x 28 rotor. This one is a little trickery. Possible options for the rear is BMW F30 345mm x 24 ( will need a custom plate between the piston and brake pads.

2nd option is to use a Camaro ZL1 or SS V8 rear rotor. It uses the same BMW 5x120.

Center bore is smaller and would need to get machined from 67.1 to 72.56. These calipers have a 365mm x 26. That size would match up nicely with the 374 front.

Audi guys have been swapping these brakes for years. The main thing is really finding the right rotors for the swap.

Here are a few Pics of the calipers.

Where can you get them Panamera/Cayenne calipers for $200/pair ??? I would buy a few sets.

[Logicoeur]

Judging by his saying they take 330mm rotors I believe those we e the 17z cayenne/panamera/Q5 brembo calipers. You can find them on car-part dot com and eBay for cheap.

[Logicoeur]

It's really not difficult to scaffold together a big brake kit. Keeping piston size, rotor diameter and the front to back rotor diameter ratio close you are fine.

This is done on so many cars across the spectrum in the modding world. That's how AP racing, willwood, brembo and countless others can offer after market options.

[LucasL]

Originally Posted by awmenard

More changes!!!

After doing some research those previous Porsche calipers use a smaller rotor that I would like to use. The visual affect just wouldn't be there.

So I did some more research and this is what I've settled on.

Front: Porsche 18z 6 pot Brembo Cayenne turbo calipers ($200.00/pair) The Porsche rotor for that specific caliper is a 368mm x 36.

I have two BMW options, X5 E53 356mm x 36 or 7 series F01 374mm x 36. Probably going with the 2nd option.

Rear: Panamera base rear 4 pot Brembo's($200.00/pair), Porsche uses a 330 x 28 rotor. This one is a little trickery. Possible options for the rear is BMW F30 345mm x 24 ( will need a custom plate between the piston and brake pads.

2nd option is to use a Camaro ZL1 or SS V8 rear rotor. It uses the same BMW 5x120.

Center bore is smaller and would need to get machined from 67.1 to 72.56. These calipers have a 365mm x 26. That size would match up nicely with the 374 front.

Audi guys have been swapping these brakes for years. The main thing is really finding the right rotors for the swap.

Here are a few Pics of the calipers.

17zl/17zr & 18zl/18zr are standard mounted calipers and this one from the picture are radially mounted one. Will work with 340mm up to 374mm discs and max 36mm thickness. You can use 374x36mm discs from other BMW as they are straight fit and calipers will need custom brackets.
This is the same setup only on E90 335i. But as far I know u can get f31 front setup on e90 so this may also work on Fx cars.

[Logicoeur]

Hey OP any updates ?

[N420i]

Man you're making this WAY complex...

Be patient, scour ebay both US and EU and you'll find a full set of blue brembos that look big enough for what you want for right around 1000€ with everything you need.
I got my set for under 900€ shipped from germany to Spain and it even came with lines, clips, bolts, rotors, pads and extra set of pads I never used...

Your initial list came in at over 800$ and didn't include lines or pads. Or fluid for that matter.