TIS Service Bulletin

SI M34 02 15
Brakes

Page 1 of 5

January 2019
Technical Service

VIBRATION WHEN BRAKING: DIAGNOSING AND REPAIRING
New information provided by this revision is preceded by this symbol

.

This Service Information bulletin replaces SI B34 02 15 dated January 2018
What’s New:
• Procedure, new attachment name
• Correction, new info added
• Attachment, new info added

MODEL
Brake Discs/Rotors
(Non-Drilled)

SITUATION
Pulsation of the brake pedal when applying the brakes

CAUSE
Excessive brake disc thickness variation







Brake disc thickness variation is the result of lateral runout in
the face of the brake disc.
A brake disc with lateral runout while driving will slightly
contact the brake pad once per revolution resulting in a thin
spot on the brake disc.
This consistent contact will eventually cause the brake disc to
wear unevenly.

PROCEDURE
Refer to the attached troubleshooting tree. M34 02 15_Troubletree_2

CORRECTION
As determined by the results of following the M34 02 15 troubleshooting tree, the brakes discs (front, rear or
both as applicable) are to be:
A. Resurfaced using a MINI approved* “on-car” brake lathe (Non-Drilled Disc/Rotors); for additional
information on brake rotor resurfacing refer to SI M34 04 16 or

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B. Replaced.
Including: Replacement of the corresponding brake pads and wear sensor(s).
• Brake pad < min thickness or CBS indicates replacement not covered under warranty for brake pads
and labor.
Note: Brake discs which are replaced will be requested to be returned for inspection.

*For the list of MINI approved “on-car” brake lathes, refer to MINI Equipment Program
(www.minicentersolutions.com).

PARTS INFORMATION
Correction A

Part Number

Description

Quantity

Refer to ETK

Front brake pads (Set)

1

Refer to ETK

Front brake pad wear sensor

1

Refer to ETK

Rear brake pads (Set)

1

Refer to ETK

Rear brake pad wear sensor

1

Refer to ETK

Brake pad paste

1 per axle

Also refer to ETK (EPC) and the repair instructions for information about onetime use fasteners, other
screws/bolts, gaskets and seals that must also be replaced while performing this repair.

WARRANTY INFORMATION
Brake discs that can be resurfaced for excessive run-out are covered under the terms of the MINI New
Passenger Car Limited Warranty.
Note: This procedure is not claimable in conjunction with performing and submitting claims under the
MINI Maintenance Program or brake discs that are below the thickness requirement for resurfacing.
Front Axle only

Defect Code:

3411005700

Brake disc, front - Vibration

Labor Operation:

Labor Allowance:

Description:

34 11 000

Refer to KSD2

Removing and installing or replacing brake pads
of both front discs brakes (Main work)

Refer to KSD2

Removing and installing or replacing brake pads
of both front disc brakes (Plus work)

Or:
34 11 505

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Or:
Refer to KSD2

Removing and installing or replacing brake pads
of both front disc brakes (Associated work –
Wheels removed)

Refer to KSD2

Fine grind both sides of both front brake discs
(Brake caliper removed)

2 FRU

Associated work: Work time to perform an
additional finish cut (one or both front sides)
when required.

Refer to KSD2

Removing and installing or replacing front brake
discs (Brake pads removed)

Refer to KSD2

Removing and installing or replacing front brake
discs (Brake caliper removed)

Defect Code:

3421005700

Brake disc, rear - Vibration

Labor Operation:

Labor Allowance:

Description:

34 21 200

Refer to KSD2

Removing and installing or replacing brake pads
of both rear disc brakes (Main work)

Refer to KSD2

Removing and installing or replacing brake pads
of both rear disc brakes (Plus work)

Refer to KSD2

Removing and installing or replacing brake pads
of both rear disc brakes (Associated work –
Wheels removed)

Refer to KSD2

Fine grind both sides of both rear brake discs
(calipers removed)

2 FRU

Associated work: Work time to perform an
additional finish cut (one or both rear sides)
when required.

34 11 510
And:
34 11 667
And, as needed:
34 99 000
Or:
34 11 613
Or:
34 11 612
Or, for the:
Rear Axle

Or:
34 21 739
Or:
34 21 740
And:
34 21 947
And, as needed:
34 99 000

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Or:
34 21 932

Refer to KSD2

Removing and installing or replacing rear brake
discs (Brake pads removed)

Refer to KSD2

Removing and installing or replacing rear brake
discs (Brake caliper removed)

Or:
34 21 931
Or, for the:
Front and Rear Axles together

Defect Code:

3411005700

Brake disc, front – Vibration

Labor Operation:

Labor Allowance:

Description:

34 11 010

Refer to KSD2

Replacing brake pads of front and rear disc
brakes (Main work)

Refer to KSD2

Replacing brake pads of front and rear disc
brakes (Plus work)

Refer to KSD2

Replacing brake pads of front and rear disc
brakes (Associated work – Wheels removed)

Refer to KSD2

Fine grind both sides of both front brake discs
(calipers removed)

2 FRU

Associated work: Work time to perform an
additional finish cut (one or both front sides)
when required.

Refer to KSD2

Removing and installing or replacing front brake
discs (Brake pads removed)

Refer to KSD2

Removing and installing or replacing front brake
discs (Brake caliper removed)

Refer to KSD2

Fine grind both sides of both rear brake discs
(calipers removed)

Or:
34 11 514
Or:
34 11 515
And:
34 11 667
And, as needed:
34 99 000
Or:
34 11 613
Or:
34 11 612
And:
34 21 947
And, as needed:

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34 99 000

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2 FRU

Associated work: Work time to perform an
additional finish cut (one or both rear sides)
when required.

Refer to KSD2

Removing and installing or replacing rear brake
discs (Brake pads removed)

Refer to KSD2

Removing and installing or replacing rear brake
discs (Brake caliper removed)

Or:
34 21 932
Or:
34 21 931

If you are using a Main labor code for another repair, use the Plus code or associated labor operation as
applicable.
Refer to KSD2 for the corresponding flat rate unit (FRU) allowances.
Work time labor operation code 34 99 000 is not considered a Main labor operation. Also, since the “work time”
FRU allowance to be claimed is specified, a separate punch time is not required.
When defect code 34 11 00 57 00 is used for repairing the front and brakes together, when applicable, claim
labor operation 34 99 000 one time for either 2 or 4 FRU that applies to the scope of the repair performed.
The flat rate labor operations for replacing the brake pads (front, rear or both) includes replacing the
corresponding brake pads, wear sensor(s) and measuring the minimum brake disc thickness.
Posted: Wednesday, January 16, 2019

ATTACHMENTS
View PDF attachment M34 02 15_Troubletree_3.
View PDF attachment M340215 Attachment Categorization.
[ Copyright ©2019 BMW of North America, Inc. ]

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DIAGNOSIS OF VIBRATION WHILE BRAKING.
Perform road test

Vibration
without braking (but amplified
by braking)?

Repair or balance
wheels/tires and
optimize road force

yes

Not free rolling
Visually
inspect rotor for:
corrosion, pad imprint,
blue spots

not ok

Resurface/Exchange*
brake discs, replace
pads**
*refer to attachment
M34 04 16_Categorisation
**Brake pads < min thickness or CBS indicates
replacement is not covered under warranty.

ok

Sharp vibration when
brakes are hot? (without
steering wheel vibration)

yes

Resurface/Exchange*
brake discs, replace
pads**

no
Check wheel flange
and rotor hub for paint, corrosion or
contamination

not ok
Clean hub or wheel

Perform
road test

not ok

Resurface/Exchange*
brake discs, replace
pads**

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