BBK Brake Pad for 18Z Brembo (Cayenne Retrofit Brembo)

[AP-M3]

Looking for help on aftermarket brake pads that fit these brembo calipers? Not satisfied at all with the OEM Brembo pads and looking for an alternative. Thanks for the help.

These are retrofit Cayenne Brembos from 2004-2010 Model 18Z.

[M3SQRD]

If it uses the same pad as the GTS then the front pad FMCI number is D1014. Hawk HB501 uses the D1014 pad shape and offers it several different pad compounds. Carbotech also offers D1014 pads with multiple pad compound options. Plenty of other manufacturers should make the D1014 pad shape.

The rear pad appears to be FMSI D978. Hawk HB502 uses this pad shape. Carbotech also offers D978 pads in multiple compounds. Other pad manufacturers will also have a D978 pad shape.

[AP-M3]

Originally Posted by M3SQRD

If it uses the same pad as the GTS then the front pad FMCI number is D1014. Hawk HB501 uses the D1014 pad shape and offers it several different pad compounds. Carbotech also offers D1014 pads with multiple pad compound options. Plenty of other manufacturers should make the D1014 pad shape.

The rear pad appears to be FMSI D978. Hawk HB502 uses this pad shape. Carbotech also offers D978 pads in multiple compounds. Other pad manufacturers will also have a D978 pad shape.

Wow thank you! This was great help.

[M3SQRD]

Originally Posted by AP-M3

Wow thank you! This was great help.

You’re welcome

You can confirm your pad shapes are correct by (1) visually comparing your pads to the FMCI pad shapes (this sometimes is sufficient to confirm the shapes), (2) measuring the pad width and height (height can be the pad compound radial depth, not the backing plate height, so check the FMCI dimensions carefully), and (3) measuring the pad thickness including the backing plate (some pad shapes are offered in multiple thicknesses).

[amrazM]

not looking to change direction here but are you not satisfied with the braking response or the ability to slow the car when the brakes are engaged? Im just curious to know how the stock brake master cylinder is performing with these larger calipers.

[AP-M3]

Originally Posted by amrazM

not looking to change direction here but are you not satisfied with the braking response or the ability to slow the car when the brakes are engaged? Im just curious to know how the stock brake master cylinder is performing with these larger calipers.

Ability to slow the car down…right from the get go when I apply the brakes It just doesn’t feel overwhelming confident when I slow down ESPECIALLY at high speeds. The brake pads are so uninspiring and I feel is holding back my new brakes. Will update you once I get new brake pads going with EBC Yellowstuff and i’ll let you know.

[M3SQRD]

Originally Posted by AP-M3

Ability to slow the car down…right from the get go when I apply the brakes It just doesn’t feel overwhelming confident when I slow down ESPECIALLY at high speeds. The brake pads are so uninspiring and I feel is holding back my new brakes. Will update you once I get new brake pads going with EBC Yellowstuff and i’ll let you know.

You should pull the pads and check whether they are glazed. The other day when you first drove the car with the new brake setup you said the brakes would not slow you down even with you literally standing on the brake pedal. This means you’ve likely glazed the pads by getting them too hot. If you pull a pad and the pad material looks really shiny then it’s glazed. Grab some coarse and medium grit sandpaper + a sanding block and start sanding the pad surface until it has a more dull look to the surface. Reinstall the pads and go for a drive. Drive moderately with several medium level braking events for 15-20 minutes to get the rotors up to temp. Now try 5-6 heavy braking events from 60-20 mph in quick succession without engaging ABS and then drive for 15-20 minutes without using the brakes, if possible. Park the car and let the pads and rotors cool down. Once cool, your brakes are fully bedded and now see how the pads initially bite as well as feel when braking.

Have you been able to address the parking brake not working?

[AP-M3]

Originally Posted by M3SQRD

You should pull the pads and check whether they are glazed. The other day when you first drove the car with the new brake setup you said the brakes would not slow you down even with you literally standing on the brake pedal. This means you’ve likely glazed the pads by getting them too hot. If you pull a pad and the pad material looks really shiny then it’s glazed. Grab some coarse and medium grit sandpaper + a sanding block and start sanding the pad surface until it has a more dull look to the surface. Reinstall the pads and go for a drive. Drive moderately with several medium level braking events for 25-20 minutes to get the rotors up to temp. Now try 5-6 heavy braking events from 60-20 mph in quick succession without engaging ABS and then drive for 15-20 minutes without using the brakes, if possible. Park the car and let the pads and rotors cool down. Once cool, your brakes are fully bedded and now see how the pads initially bite as well as feel when braking.

100% that’s what happened. But even when I first began to bed those brakes the first couple stops already felt more than unsatisfactory despite the spongy pedal feel.

[M3SQRD]

Originally Posted by amrazM

not looking to change direction here but are you not satisfied with the braking response or the ability to slow the car when the brakes are engaged? Im just curious to know how the stock brake master cylinder is performing with these larger calipers.

He had a very long pedal when he first drove the car and tried to bed the pads. He was going to rebleed the brakes to see whether the pedal would get firmer with little travel. Also let him know that if air got into the ABS/DSC system, it would need to be cycled to get the air out of the system. I explained the long pedal also could be due to calipers with larger piston areas compared to stock could be the cause of his long pedal.

[M3SQRD]

Originally Posted by AP-M3

100% that’s what happened. But even when I first began to bed those brakes the first couple stops already felt more than unsatisfactory despite the spongy pedal feel.

This could be due to a bunch of things:
1. Air in the line so bad pedal feel and poor stopping power initially
2. The pad compound requires a decent amount of heat before braking well and consistently
3. Air in the ABS/DSC system which needs to be cycled to remove the air
4. Brake caliper areas are much larger than stock
5. Different combinations of the above.

I’ll see if I can find the piston sizes of the Porsche 18Z 6p and 4p fixed calipers.

[AP-M3]

Originally Posted by M3SQRD

This could be due to a bunch of things:
1. Air in the line so bad pedal feel and poor stopping power
2. The pad compound requires a decent amount of heat before braking well and consistently
3. Air in the ABS/DSC system which needs to be cycled to remove the air
4. Brake caliper areas are much larger than stock
5. Different combinations of the above.

I’ll see if I can find the piston sizes of the Porsche 18Z 6p and 4p fixed calipers.

Had the pedal feel fixed by doing another brake fluid flush!! Took it up to Palomar Mtn down here in Socal pedal feel was great braking performance again was whatever but once heat gets into the pads at the early stages it’s nearly undeliverable and sorry it’s a 17z caliper! I was wrong earlier thank you!

[M3SQRD]

Originally Posted by AP-M3

Had the pedal feel fixed by doing another brake fluid flush!! Took it up to Palomar Mtn down here in Socal pedal feel was great braking performance again was whatever but once heat gets into the pads at the early stages it’s nearly undeliverable and sorry it’s a 17z caliper! I was wrong earlier thank you!

That’s good to hear!

So it sounds like your only concern left is initial cold and hot bite, correct?

The pad shapes above might still be valid if your new calipers came from a Cayenne GTS because I didn’t search by 18z. I’ll do a quick search for 17z and see if the pad shapes are still correct.

[AP-M3]

Originally Posted by M3SQRD

That’s good to hear!

So it sounds like your only concern left is initial cold and hot bite, correct?

The pad shapes above might still be valid if your new calipers came from a Cayenne GTS because I didn’t search by 18z. I’ll do a quick search for 17z and if the pad shapes are still correct.

Yes! Just bite in general doesn’t feel at all impressive especially compared to stock and when it gets hot it falls off extremely quick! Additionally even without heat in the pads if I stop from over 120~~ it is treacherous the pads feel horrible and i’m probally never going to go that speed until I get these pads sorted out but appreciate your knowledge again!

[M3SQRD]

Originally Posted by AP-M3

Yes! Just bite in general doesn’t feel at all impressive especially compared to stock and when it gets hot it falls off extremely quick! Additionally even without heat in the pads if I stop from over 120~~ it is treacherous the pads feel horrible and i’m probally never going to go that speed until I get these pads sorted out but appreciate your knowledge again!

You should NOT be going 120 mph to begin with but never with cold pads that are likely glazed! Please check your pads to see if they’re glazed.

BMW uses a pad with an extremely aggressive initial bite to give people a feeling of high confidence in the braking system. I personally don’t like it especially in stop-n-go driving. It’s difficult to find a street pad with that same level of COF at low temps and strong braking performance/modulation at all temps. With your new brake kit, having such a high initial bite may cause you to overslow the car when braking.

[AP-M3]

Originally Posted by M3SQRD

You should NOT be going 120 mph to begin with but never with cold pads that are likely glazed! Please check your pads to see if they’re glazed.

BMW uses a pad with an extremely aggressive initial bite to give people a feeling of high confidence in the braking system. I personally don’t like it especially in stop-n-go driving. It’s difficult to find a street pad with that same level of COF at low temps and strong braking performance/modulation at all temps. With your new brake kit, having such a high initial bite may cause you to overslow the car when braking.

Very duly noted. And this is after about 30 minutes of moderate use of the brakes…not from a get go. But you’re right these brake pads are more than likely glazed and i’m not going to be pushing it.

[M3SQRD]

Originally Posted by AP-M3

Very duly noted. And this is after about 30 minutes of moderate use of the brakes…not from a get go. But you’re right these brake pads are more than likely glazed and i’m not going to be pushing it.

FMSI pad numbers are either:

Front D1014
Rear D978

OR

Front D1349
Rear D1350

Without knowing what the original front and rear rotor diameters are used with these calipers on a 2005-2010 Cayenne or the specific Cayenne model (e.g., S, GTS, Turbo, etc.) these calipers are from. Can you find out which Cayenne model/trim level and F/R rotor sizes these calipers are used on?

[AP-M3]

Originally Posted by M3SQRD

FMSI pad numbers are either:

Front D1014
Rear D978

OR

Front D1349
Rear D1350

Without knowing what the original front and rear rotor diameters are used with these calipers on a 2005-2010 Cayenne or the specific Cayenne model (e.g., S, GTS, Turbo, etc.) these calipers are from. Can you find out which Cayenne model/trim level and F/R rotor sizes these calipers are used on?

It’s going to be a Base V6 Cayenne 330M Rotor. I believe the S came with 18Z 350mm rotor. Thank you!

[M3SQRD]

Originally Posted by AP-M3

It’s going to be a Base V6 Cayenne 330M Rotor. I believe the S came with 18Z 350mm rotor. Thank you!

Based on this information, it appears it’s Front FMSI D1007 (Hawk HB512) and Rear FMSI 978 (Hawk HB502). Please confirm by comparing the actual pads you’re kit came with to the FMSI pad dimensions in the images.

[AP-M3]

Originally Posted by M3SQRD

Based on this information, it appears it’s Front FMSI D1007 (Hawk HB512) and Rear FMSI 978 (Hawk HB502)

This is perfect thank you again👍🏽