Front Brake Caliper – 2019-2020 BMW R 1250 GS, GS Adventure & R 1250 RT, 2020 S 1000 RR & S 1000 XR Motorcycles

August 13, 2020 NHTSA CAMPAIGN NUMBER: 20V476000

Front Brake Calipers May Leak/FMVSS 122

Overtime, a leaking front brake caliper can reduce the amount of brake fluid in the reservoir. Low volume could affect brake performance, increasing the risk of crash.


NHTSA Campaign Number: 20V476

Manufacturer BMW of North America, LLC


Potential Number of Units Affected 9,392



BMW of North America, LLC (BMW) is recalling certain 2019-2020 R 1250 GS, GS Adventure and R 1250 RT, 2020 S 1000 RR and S 1000 XR motorcycles. The front brake calipers may leak brake fluid when parked. As such, these motorcycles fail to comply with the requirements of the Federal Motor Vehicle Safety Standard number 122, “Motorcycle Brake Systems.”



BMW will notify owners, and dealers will inspect and if necessary, replace the front brake calipers with an improved version, free of charge. BMW issued owners an interim notification on October 12, 2020. As of January 19, 2021, a remedy was still not available. The recall began March 8, 2021. Owners may contact BMW customer service at 1-800-525-7417.



Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to


Check if your BMW Motorcycle has a Recall


Stop Sale: R 1250 GS (K50), R 1250 GSA (K51), R 1250 RT/RTP (K52), S 1000 RR…

Front Brake Caliper

BMW Motorrad is announcing a recall and stop sale for the K50, K51, K52, K67 and K69. The recall is related to a potential leak of the front brake calipers in vehicles produced from 8/27/2018 up to 2/28/2020. A process is currently being developed to inspect the affected vehicles and repair if necessary. The affected VIN’s have been marked with a stop sale flag “STOP340006”. Bikes in dealer inventory with this stop flag cannot be sold until further notice. More information will be communicated through Dealer Direct as it becomes available.

NHTSA Statement

Please be reminded that it is a violation of federal law (The Safety Act) for you to sell, lease or deliver any new motor vehicle covered by this notification until the recall repair has been performed. This means that dealers may not legally deliver new motor vehicles to consumers until they are fixed or use/sell replacement equipment/parts subject to this recall. Note also that substantial civil penalties apply to violations of the Safety Act. 

Also, you should not sell, lease or deliver any used vehicles in your inventory subject to a safety recall until the repair is completed.

Aftersales, Motorrad Dealer Direct, Recalls, Sales

Aug 7, 2020


Part 573 Report – Chronology
Model Year 2019-2021 R1250GS/GS-Adventure/RT
Model Year 2020-2021 S1000RR/XR
Front Brake Calipers
November 5, 2020


In 2019, BMW became aware of reports alleging fluid leaks of the front brake calipers.  BMW conducted an engineering review.  Because the issue did not affect brake performance, a qualityrelated product improvement program was implemented involving a number of production changes to the front brake calipers.


On February 18, 2020, NHTSA’s Office of Defects Investigation (ODI) contacted BMW regarding complaints the agency received alleging front brake caliper leaks involving BMW R1250 motorcyclesBMW requested a meeting with NHTSA to discuss the issue which would include engineering and technical development efforts.  NHTSA also indicated that they intended to open a Preliminary Evaluation (PE) to explore this issue.


On April 1, 2020, NHTSA published the PE Opening Resume and, on April 7, 2020, NHTSA sent BMW the PE’s Information Request (IR) letter.


Between April and June, BMW collected information and prepared a response to NHTSA’s IR.  On May 29PthP, and on June 29PthP, BMW provided its response to the agency.  BMW’s response stated that the issue that is the subject of the IR does not pose an unreasonable risk to motor vehicle safety.


In brief, the extensive testing and analyses conducted by BMW showed that the weeping effect occurs when the motorcycle is parked, and is due to a small incompatibility between the seal groove of the brake caliper and the inner seal due to the surface roughness of these components.  It is a low-pressure condition that does not occur with brake actuation (pressure applied to the inner seal, piston, and seal groove) because the fluid loss (leak) path is closed.  It will also not cause a spontaneous and unexpected loss of brake pressure while riding when the front brakes are actuated.


BMW also conducted FMVSS 122 dynamic (riding) tests with early-generation suspect “leaky” calipers.  These tests involved varying levels of brake fluid in the brake fluid reservoir, and in some cases with only the front brakes actuated.  The tests showed that there was no material effect upon FMVSS 122 dynamic (riding) brake performance.  In all cases, the stopping distances were well within the FMVSS 122 performance requirements.  In these tests, there was no observable brake fluid leaking during and after completion of all tests.


In addition, an “extreme” test (front brake calipers soaked in brake fluid) was conducted; both the vehicle acceleration, and the brake lever hand force, results were well within the FMVSS 122 requirements.


On July 28, 2020, NHTSA’s Office of Vehicle Safety Compliance (OVSC) contacted BMW to discuss the issue.  OVSC indicated, after a review of the field data submitted in the PE response, the subject motorcycles may not fully conform to FMVSS 122 Section 5.2.3, specifically after completion of a compliance test, a front brake caliper may start to leak.


After the discussion with NHTSA’s OVSC, BMW conducted further reviews and analyses to understand the basis for NHTSA’s position.


On August 6, 2020,  BMW decided to conduct a voluntary non-compliance recall.

BMW has not received any reports, nor is BMW otherwise aware, of any accident or injuries associated with this issue.


In late September, BMW became aware of a Model Year 2020 R 1250 RT motorcycle in which the front brake calipers exhibited signs of leaking. In October, BMW and NHTSA discussed this case and, on October 21, 2020, BMW performed an inspection of the motorcycle in which NHTSA observed.


In addition, warranty claims were reviewed for motorcycles produced after March 1, 2020 in which claims were processed for front brake calipers that exhibited signs of leaking.


After further reviews and analyses, it appeared that the current version of the front brake calipers could start to exhibit leaks.


On October 29, 2020, BMW decided to include these additional potentially affected motorcycles in the recall and, to reexamine and revise the remedy for motorcycles identified and included in BMW’s August 13, 2020 filing.



8 Affected Products


BMW R 1250 GS 2019-2020
BMW R 1250 GS ADVENTURE 2019-2020
BMW R 1250 RT 2019-2020
BMW S 1000 RR 2020
BMW S 1000 XR 2020


27 Associated Documents

Remedy Instructions and TSB – RECALL 20V-476 BRAKE CALIPER CHECK (K67)

RCRIT-20V476-8248.pdf 1670.69KB



Remedy Instructions and TSB

RCRIT-20V476-5006.pdf 243.72KB



Manufacturer Notices(to Dealers,etc) – Dealer Notification re BMW Announcing a recall and stop sale for the K50, K51, K52, K67 and K69

RCMN-20V476-7324.pdf 80.309KB



Recall Acknowledgement

RCAK-20V476-5019.pdf 244.304KB



Noncompliance Report 573 Report

RCLRPT-20V476-4340.PDF 217.19KB



Remedy Instructions and TSB – RECALL 20V-476 BRAKE CALIPER CHECK (K5X, K69)

RCRIT-20V476-2865.pdf 968.489KB



Recall Quarterly Report #2, 2021-2

RCLQRT-20V476-6888.PDF 211.239KB



Remedy Instructions and TSB

RCRIT-20V476-7445.pdf 381.527KB



Remedy Instructions and TSB – Service Information Bulletin – SIB 34 02 21 RECALL 20V-476 BRAKE CALIPER CHECK (K5X, K69)

RCRIT-20V476-5807.pdf 969.439KB



Interim Owner Notification Letter(Part 577)

RIONL-20V476-1070.pdf 743.896KB



Manufacturer Notices(to Dealers,etc) – Dealer Notification re Brake Caliper Recall Timing and Technical Update

RCMN-20V476-7796.pdf 90.412KB



ISSUED Interim Owner Notification Letter(Part 577)

RIONL-20V476-8769.pdf 730.403KB



Manufacturer Notices(to Dealers,etc) – Hayes caliper update

RCMN-20V476-4929.pdf 56.264KB



Remedy Instructions and TSB

RCRIT-20V476-2093.pdf 2152.878KB



Miscellaneous Document – Part 573 Report – Chronology

RMISC-20V476-9850.pdf 63.241KB



Remedy Instructions and TSB – RECALL 20V-476 BRAKE CALIPER CHECK (K67)

RCRIT-20V476-7383.pdf 2149.832KB



Manufacturer Notices(to Dealers,etc) – Notification re Replacement Parts for the Caliper Sales Stop

RCMN-20V476-2712.pdf 41.008KB



Miscellaneous Document – Important Programming Reminder for RECALL 20V-476 BRAKE CALIPERCHECK (K67)

RMISC-20V476-1469.pdf 96.911KB



Manufacturer Notices(to Dealers,etc) – Dealer Notification re Recall 20V-476 Brake Caliper K67 SI: 34 03 21

RCMN-20V476-5793.pdf 14.954KB



Remedy Instructions and TSB – Service information Bulletin re RECALL 20V-476 BRAKE CALIPER CHECK

RCRIT-20V476-7192.pdf 362.883KB



Manufacturer Notices(to Dealers,etc) – Dealer Notification re Stop Sale: R 1250 GS, R 1250 GSA, R 1250 RT/RTP, S 1000 RR, S 1000 XR Front Brake Caliper

RCMN-20V476-0289.pdf 77.421KB



Manufacturer Notices(to Dealers,etc) – Dealer Notification re Stop Sale: R 1250 GS, R 1250 GSA, R 1250 RT/RTP, S 1000 RR, S 1000 XR Front Brake Caliper

RCMN-20V476-1021.pdf 21.126KB



Recall Quarterly Report #1, 2021-1

RCLQRT-20V476-5502.PDF 211.141KB



Remedy Instructions and TSB

RCRIT-20V476-7338.pdf 194.227KB



Miscellaneous Document – Chronology

RMISC-20V476-6682.pdf 55.629KB



ISSUED Owner Notification Letter(Part 577)

RCONL-20V476-3634.pdf 3128.75KB



Recall Quarterly Report #3, 2021-3

RCLQRT-20V476-5479.PDF 211.322KB



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