FaultScore

FaultScore report

2009 BMW Z4 problems

Owners have filed 26 complaints about the 2009 BMW Z4 with NHTSA between 2009 and 2024. The largest single group is the wheels. Across this model's run it ranks 10 of 12 worst.

B

FaultScore 32/100

Higher is worse. Measured against the other years of the BMW Z4.

How this is worked out

The numbers

26

Complaints

1

Crashes reported

0

Fires reported

0

Injuries reported

19,579 mi

Median mileage at failure

Half of reported failures happened before this

78%

Failed under 36,000 miles

Inside a typical bumper-to-bumper warranty

What kind of bad

The letter says how bad. This says what kind — whether this year drew an unusual number of complaints, unusually dangerous ones, or failures that arrived unusually early.

Complaint volume 11 vs 50 Severity 20 vs 50 Early failure 100 vs 50
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 11
Against the median year of the BMW Z4. 50 means typical for this model; 100 means roughly double.
Severity — 20
3.8% of these complaints involved a crash, fire, injury or death, against a national rate of 9.7%.
Early failure — 100
78% of failures with a mileage on record happened under 36,000 miles, against a national rate of 29%.

How 2009 compares with every other BMW Z4

Click any bar to open that year's report.

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks on a 2009 BMW Z4

Every complaint is filed against a part. Follow any row for the complaints about that part alone.

Wheels 11 42.3%

Median failure at 18,000 miles

Engine & Cooling 5 19.2%

Median failure at 28,000 miles

Seat Belts 2 7.7%

Median failure at 38,000 miles

Airbags 2 7.7%
Electrical System 2 7.7%

Median failure at 54,600 miles

Fuel & Propulsion 1 3.8%

Median failure at 98,000 miles

Brakes 1 3.8%

Median failure at 5 miles

Steering 1 3.8%
Transmission & Drivetrain 1 3.8%

1 crashes, 0 fires · median 2,516 mi

When it fails

Odometer readings owners gave when they filed. About half of all complaints include one.

Under 1,000 miles 1 5.6%
1,000 – 9,999 miles 1 5.6%
10,000 – 24,999 miles 10 55.6%
25,000 – 49,999 miles 3 16.7%
75,000 – 99,999 miles 3 16.7%

When owners complained

A spike years after the car went on sale usually means a part wearing out on schedule across the whole fleet — the kind of pattern no single owner can see from inside their own car.

Nov 2009 peak 3 Feb 2024

Recalls on the 2009 BMW Z4

A complaint is one owner's allegation. A recall is the point at which the manufacturer or a regulator agreed the defect is real and dangerous enough to fix for free — however old the car is.

United States — NHTSA

22V119000

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)

BMW of North America, LLC (BMW) is recalling certain 2008-2013 1 Series Coupe (128i); 2007-2013 3 Series Coupe (328i, 328xi, 328i xDrive); 2007-2010 X3 SAV (X3 3.0si, X3 xDrive30i); 2008-2013 1 Series Convertible (128i); 2006-2011 3 Series Sedan (325i, 325xi, 328i, 328xi, 328i xDrive, 330i, 330xi); 2006-2012 3 Series Wagon (328i, 328i xDrive); 2007-2013 3 Series Convertible (328i); 2006-2010 5 Series Sedan (525i, 525xi, 528i, 528xi, 530i, 530xi); 2006-2007 5 Series Wagon (530xi); 2007-2010 X5 SAV (X5 3.0si, X5 xDrive30i); 2006-2008 Z4 Coupe (Z4 3.0si); and 2006-2011 Z4 Roadster (Z4 3.0i, Z4 3.0si, Z4 sDrive30i) vehicles. The heater for the positive crankcase ventilation (PCV) valve may short circuit.

Risk: An electrical short can cause the PCV valve heater to overheat, increasing the risk of a fire while driving or, soon after driving when parked.

17V683000

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)

BMW of North America, LLC (BMW) is recalling certain 2008-2011 128i and 2007-2011 328i, 328xi, 328i xDrive, 525i, 525xi, 528i, 528xi, 530i, 530xi, X3 3.0si, X3 xDrive30i, X5 xDrive30i, Z4 3.0i, Z4 3.0si and Z4 sDrive30i vehicles. The heater for the positive crankcase ventilation (PCV) valve may short circuit.

Risk: An electrical short can cause the parts within the PCV valve to melt, increasing the risk of a fire, even when the vehicle is not in use.

13V044000

ELECTRICAL SYSTEM

BMW is recalling certain model year 2008-2012 1-Series coupes and convertibles manufactured December 2007 through September 2011; and 2007-2011 3-Series coupes and convertibles manufactured March 2007 through October 2011; 2007-2011 3-Series sedans manufactured March 2007 through October 2011; 2007-2011 3-Series sports wagons manufactured March 2007 through June 2011; and 2009-2011 Z4 vehicles manufactured March 2009 through June 2011. In February 2013, BMW recalled 504,545 vehicles. In July 2013, BMW informed the agency that it was adding 1-Series, 3-Series, and Z4 vehicles, representing an additional 12,094 vehicles. The total number of vehicles being recalled is now 516,791. The connector for the positive battery cable connector and the corresponding terminal on the fuse box may degrade over time. Over time, the high current flow and heat from electrical resistance may lead to a breakage of the connection, and a loss of electrical power to the vehicle.

Risk: If there is a loss of electrical power to the vehicle, the vehicle may unexpectedly stall, increasing the risk of a crash.

09V327000

ELECTRICAL SYSTEM:WIRING

BMW IS RECALLING CERTAIN MODEL YEAR 2009 Z4 30I AND 35I VEHICLES MANUFACTURED BETWEEN MARCH 10 AND MARCH 19, 2009. A DEFECTIVE CRIMP CONNECTOR IN A BELT TENSIONER WIRING PLUG MAY LEAD TO INCREASED ELECTRICAL RESISTANCE OF THAT CONNECTION.

Risk: INCREASED ELECTRICAL RESISTANCE IN THAT CIRCUIT COULD CAUSE THE SAFETY BELT TENSIONER TO FAIL TO DEPLOY IN A CRASH, POSSIBLY RESULTING IN INCREASED INJURY TO THE SEAT OCCUPANT.

Canada — Transport Canada

Canada runs its own recall programme, and its campaigns do not always mirror the American ones.

Recall 2024544 587,250 units in Canada

Label

Issue: On certain vehicles, the tire and loading information label does not list that there is no spare tire in both official languages. The label reads as "NONE" when it should read as "NONE / AUCUN". Canadian regulations require the information to be listed on the label in both English and French. Safety Risk: This error does not affect vehicle safety. Corrective Actions: This is not a recall. The company has corrected the tire and loading information label for all new vehicles.

Recall 2022095 98,111 units in Canada

Engine

Issue: On certain vehicles equipped with an N52 or N52K 6-cylinder engine, a manufacturing problem could cause the PCV valve heater (blow-by heater) to short circuit and overheat. Note: This replaces Transport Canada recalls 2017-470 and 2019-170. Only vehicles equipped with an N52 or N52K engine require this repair. Safety Risk: An overheated engine PCV valve heater could create the risk of a fire, even while the vehicle is parked and turned off. Corrective Actions: BMW will notify owners by mail and instruct you to take your vehicle to a dealer to install a wire harness repair kit. BMW recommends that you should park your vehicle outdoors until the recall repairs have been completed.

Recall 2017470 79,616 units in Canada

Engine

On certain vehicles equipped with the N52 6-cylinder engine, an electrical short could occur in the PCV valve heater due to manufacturing irregularities. If this occurs, the surrounding plastics could overheat, melt and potentially cause a fire, which could increase the risk of injury and/or damage to property. Correction: Dealers will replace the PCV valve heater.

Recall 2013048 65,685 units in Canada

Electrical

On certain vehicles, the positive battery cable connection to the fuse box could fail while the vehicle is being driven. This could interrupt the vehicle’s electrical system, resulting in engine stalling, loss of vehicle propulsion and a loss of function of various vehicle systems, such as lights. A loss of vehicle propulsion and electrical vehicle systems, in conjunction with traffic and road conditions, and the driver’s reactions, could increase the risk of a crash causing property damage and/or personal injury. Correction: Dealers will replace the positive battery cable connector with an updated version.

Recalls cover specific build ranges, so check your own vehicle by VIN at nhtsa.gov/recalls or, in Canada, Transport Canada.

Complaints that involved harm

Reports where the owner recorded a crash, a fire, an injury or a death.

at 2,516 miles Austin, TX Crash

POWER TRAIN:MANUAL TRANSMISSION

MY 2009 BMW Z4 WAS PARKED IN MY DRIVEWAY AT ABOUT A 65 ANGLE TO THE REAR OF MY TOYOTA PICKUP TRUCK. I GOT INTO THE BMW INTENDING MOVE IT INTO THE GARAGE. THE CAR HAS A STANDARD TRANSMISSION AND WAS IN FIRST GEAR WITH THE PARKING BRAKE ON. I DEPRESSED THE CLUTCH PEDAL AND STARTED THE ENGINE. AN INSTANT AFTER THE PARKING BRAKE RELEASED, THE RUBBER CLUTCH PEDAL COVER SLIPPED OFF THE CLUTCH PEDAL TAKING MY FOOT WITH IT. THE BMW SHOT FORWARD. THE FRONT RIGHT FENDER OF THE BMW STRUCK THE LEFT REAR BUMPER OF THE TOYOTA PICKUP TRUCK STALLING THE ENGINE OF THE BMW. THE RESULTING DAMAGE TO THE BMW IS APPROXIMATELY $5000.00 AND THE DAMAGE TO THE TOYOTA PICKUP TRUCK IS APPROXIMATELY $550.00. TUESDAY, SEPTEMBER 29, 2009, I TOOK THE BMW INTO THE AUSTIN BMW DEALER. THE RUBBER PEDAL COVER WAS REATTACHED WITH 'SUPERGLUE' AND I LEFT THE DEALERSHIP. TWO DAYS LATER I TOOK THE BMW TO A BODY SHOP. WHEN I RETURNED HOME, I FELT THE RUBBER CLUTCH PEDAL COVER BEGIN TO 'SLIP' AS I DROVE UP MY DRIVEWAY. THE NEXT DAY I AGAIN TOOK THE CAR INTO THE BMW DEALER. THE RUBBER PEDAL COVER WAS 'LOOSE' BUT DID NOT COME COMPLETELY OFF. I TALKED TO THE SERVICE MANAGER AND SCHEDULED A CONFERENCE WITH THE BMW FACTORY REP AT HIS NEXT VISIT. ON WEDNESDAY, OCTOBER 21ST I RETURNED THE CAR TO THE DEALERSHIP FOR EXAMINATION BY THE FACTORY REP. WHEN THE CAR WAS RETURNED TO ME THE CLUTCH PEDAL HAD BEEN REATTACHED. I WAS TOLD THE FACTORY REP WOULD BE IN CONTACT WITH ME WITHIN TWO WEEKS. 'SCOTT' FROM BMW HEADQUARTERS (NEW JERSEY?) CALLED ME ON NOVEMBER 4, 2009 AND TOLD ME THAT THEY HAD MANUFACTURED 10,000 OF THIS MODEL AND HAD RECEIVED NO OTHER COMPLAINTS OF CLUTCH PEDAL COVERS COMING OFF. I BELIEVE THE RUBBER CLUTCH PEDAL CURRENTLY IN THE VEHICLE IS THE ORIGINAL. THE DEALER PROVIDED ME WITH A CUSTOMER COPY OF THE WORK ORDER ON MY FIRST VISIT. THE DEALER DID NOT PROVIDE ME WITH ANY WRITTEN DOCUMENTATION ON MY SUBSEQUENT TWO VISITS.

NHTSA complaint #10292691 — an unverified report by a vehicle owner.

The most recent complaints

In the owners' own words, exactly as filed with NHTSA.

Claremont, CA

SEAT BELTS

Drivers side seat belt frayed at the point where it comes out of the vehicle when I am seated and buckled in. This is nearly impossible for me to see and I only saw it by chance pulling the seat belt out for some incidental reason. I am unclear how long it had been like this. Otherwise this defect is completely hidden as it disappears into the vehicle when I unbuckle.

NHTSA complaint #11571081 — an unverified report by a vehicle owner.

Claremont, CA

AIR BAGS

The airbag sensor in my passenger seat has failed. I have been quoted approximately $2000 to repair this. However researching online I see BMW Service Bulletin SB-[XXX] which indicates this may be a widespread problem? [XXX] I am concerned to take passengers in the vehicle as I do not know if the airbags will deploy, or deploy at the wrong "rate" based on my understanding of how the sensors work. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11571078 — an unverified report by a vehicle owner.

Claremont, CA

AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION

The airbag sensor in my passenger seat has failed. I have been quoted approximately $2000 to repair this. However researching online I see BMW Service Bulletin SB-[XXX] which indicates this may be a widespread problem? [XXX] I am concerned to take passengers in the vehicle as I do not know if the airbags will deploy, or deploy at the wrong "rate" based on my understanding of how the sensors work. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11571078 — an unverified report by a vehicle owner.

at 38,000 miles Claremont, CA

SEAT BELTS

THE SEAT BELT IS FRAYING AT THE POINT WHERE IT MOST COMMONLY RESTS AGAINST THE CHASSIS WHILE I AM WEARING IT. IT SEEMS TO BE RUBBING AGAINST THE CAR CAUSING IT TO FRAY. I ONLY NOTICED IT BY CHANCE, AS IT IS NOT A COMMON SPOT TO LOOK AT WHILE SEATED IN THE VEHICLE.

NHTSA complaint #11352592 — an unverified report by a vehicle owner.

Beverly Hills, CA

WHEELS

WHEELS DEVELOPED CRACKS AND AIR WAS LEAKING.

NHTSA complaint #11340973 — an unverified report by a vehicle owner.

at 5 miles BH, CA

SERVICE BRAKES

EBRAKE FAILURE. I WENT ON THE Z4 FORUM AND MANY PEOPLE REPORT THIS SAME ISSUE OF THE ELECTRONIC PARKING BRAKE / EMERGENCY BRAKE SIMPLY FAILING TO WORK.

NHTSA complaint #11340972 — an unverified report by a vehicle owner.

Rolling Hills, CA

ENGINE

TL* THE CONTACT OWNS A 2009 BMW Z4. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V683000 (ENGINE AND ENGINE COOLING); HOWEVER, THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE DEALER AND MANUFACTURER WERE NOT NOTIFIED. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA complaint #11129939 — an unverified report by a vehicle owner.

Montebello, CA

ENGINE

TL* THE CONTACT OWNS A 2009 BMW Z4. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V683000 (ENGINE AND ENGINE COOLING); HOWEVER, THE PART NEEDED FOR THE REPAIR WAS NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT CALLED MCKENNA BMW AT (562) 219-4570 (LOCATED AT 10900 FIRESTONE BLVD, NORWALK, CA 90650) AND WAS INFORMED THAT THE PART WAS NOT AVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA complaint #11124401 — an unverified report by a vehicle owner.

at 98,000 miles Washington, DC

ELECTRICAL SYSTEM

ENGINE UNEXPECTEDLY STALLED AND SHUTDOWN WHILE IN MOVEMENT WITH POTENTIAL TO CAUSE ACCIDENT. VEHICLE CANNOT BE TURNED ON UNTIL FULL STOP IS ACHIEVED AND TRANSMISSION PLACED IN "P." IDLE ENGINE RPM CONTINUES TO VARY DRASTICALLY UP AND DOWN WITH INDICATION A PROBLEM PERSISTS AND IS LIKELY POSE THE SAME SAFETY RISK. I BOUGHT VEHICLE USED ON 2012 AND HAD THE ISSUE SHORTLY AFTER PURCHASE TWICE AT HIGHWAY SPEEDS. DEALERSHIP TOOK MONTHS TO APPARENTLY RESOLVE. I AM BACK AT RISK.

NHTSA complaint #11012694 — an unverified report by a vehicle owner.

at 98,000 miles Washington, DC

ENGINE

ENGINE UNEXPECTEDLY STALLED AND SHUTDOWN WHILE IN MOVEMENT WITH POTENTIAL TO CAUSE ACCIDENT. VEHICLE CANNOT BE TURNED ON UNTIL FULL STOP IS ACHIEVED AND TRANSMISSION PLACED IN "P." IDLE ENGINE RPM CONTINUES TO VARY DRASTICALLY UP AND DOWN WITH INDICATION A PROBLEM PERSISTS AND IS LIKELY POSE THE SAME SAFETY RISK. I BOUGHT VEHICLE USED ON 2012 AND HAD THE ISSUE SHORTLY AFTER PURCHASE TWICE AT HIGHWAY SPEEDS. DEALERSHIP TOOK MONTHS TO APPARENTLY RESOLVE. I AM BACK AT RISK.

NHTSA complaint #11012694 — an unverified report by a vehicle owner.

at 98,000 miles Washington, DC

FUEL/PROPULSION SYSTEM

ENGINE UNEXPECTEDLY STALLED AND SHUTDOWN WHILE IN MOVEMENT WITH POTENTIAL TO CAUSE ACCIDENT. VEHICLE CANNOT BE TURNED ON UNTIL FULL STOP IS ACHIEVED AND TRANSMISSION PLACED IN "P." IDLE ENGINE RPM CONTINUES TO VARY DRASTICALLY UP AND DOWN WITH INDICATION A PROBLEM PERSISTS AND IS LIKELY POSE THE SAME SAFETY RISK. I BOUGHT VEHICLE USED ON 2012 AND HAD THE ISSUE SHORTLY AFTER PURCHASE TWICE AT HIGHWAY SPEEDS. DEALERSHIP TOOK MONTHS TO APPARENTLY RESOLVE. I AM BACK AT RISK.

NHTSA complaint #11012694 — an unverified report by a vehicle owner.

at 25,000 miles Edina, MN

WHEELS

REAR WHEELS ON BMW Z4 CRACKED DURING NORMAL ROAD USAGE. BOTH CRACKED WITHIN A MONTH OF EACH OTHER. THESE ARE 19" WHEELS WITH RUN FLAT TIRES AND 296 WHEEL DESIGN. THESE WHEELS DON'T SEEM TO BE DESIGNED FOR PUBLIC ROAD USAGE BUT ARE ADVERTISED AS SUCH. THEY CANNOT WITHSTAND EVEN MINOR ROAD IMPERFECTIONS. BMW REFUSED TO COVER UNDER WARRANTY AND DOESN'T ACKNOWLEDGE THE WHEEL DESIGN AS DEFECTIVE DESPITE NUMEROUS REPORTS WITH THIS EXACT WHEEL. THEY NO LONGER SELL THE WHEEL ON NEW VEHICLES AND IN FACT EVEN REDESIGNED THE WHEEL IN 2012.

NHTSA complaint #10607182 — an unverified report by a vehicle owner.

at 28,000 miles Birmingham, AL

ENGINE

THE CAR HAS STALLED MULTIPLE TIME WHEN COMING TO A STOP. IN SOME INSTANCES I DID NOT HAVE TO COME TO A COMPLETE STOP SUCH AS CROSSING A DIVIDED HIGHWAY, JUST SLOWED SIGNIFICANTLY. AS I WENT TO ACCELERATE THROUGH THE INTERSECTION THE ENGINE HAD STALLED AND I WAS STUCK IN THE MIDDLE OF THE INTERSECTION WITH NO POWER. CAR STARTS RIGHT BACK UP EACH TIME BUT YOU MUST STOP TO PLACE THE CAR IN DRIVE(AUTOMATIC TRANSMISSION). NEARLY HIT BY ONCOMING TRAFFIC ON 3 SEPARATE OCCASIONS. DEALERSHIP WAS ABLE TO REPLICATE, SOLD ME A $400 BATTERY AS THE FIX. CAR STALLED ON THE WAY HOME FROM DEALERSHIP. RETURNED THE CAR BUT THEY COULD NOT REPLICATE AND SINCE THE INSTANCES DID NOT PRODUCE A FAULT CODE THEY COULD DO NOTHING. CAR CONTINUES TO STALL WHICH MAKES IT A SAFETY HAZARD. THERE ARE 100'S OF POST ON BMW FORUMS WITH THE SAME ISSUE BUT BMW CLAIMS TO HAVE NO KNOWLEDGE OF THE ISSUE. SOMEONE NEEDS TO STEP IN AND MAKE THEM ADDRESS THE ISSUE. THIS IS NOT THE KNOWN BATTERY CABLE ISSUE, THAT WAS REPLACED PER RECALL.

NHTSA complaint #10597727 — an unverified report by a vehicle owner.

at 21,159 miles Valrico, FL

WHEELS

WHEN I GOT INTO MY CAR ONE MORNING THE SENSOR WENT OFF LETTING ME KNOW THAT I HAD A LOW TIRE PRESSURE. I WENT AND FILLED THE TIRE TO THE PROPER LEVEL; I THOUGHT EVERYTHING WAS FINE, THEN THE NEXT FOLLOWING MORNING THE SAME THING HAPPENED. I TOOK THE CAR IN TO GET IT CHECKED OUT AND THEY FOUND THAT THE RIM WAS CRACKED IN 4 PLACES. I WAS WONDERING HOW THE RIM COULD HAVE GOTTEN CRACKED CAUSE I BARELY DRIVE THE CAR, SITS IN THE GARAGE MOST OF THE TIME, I DRIVE ON EVEN ROADS WHEN I DO, BUT I HAVE ONLY HAD THE CAR FOR 4 MONTHS, PURCHASED IT FROM CAR MAX. I WENT TO VARIOUS POSTS AND FOUND OUT THAT THERE IS A PROBLEM WITH THE RIMS THAT BMW PUT ON THE Z4 35I BECAUSE THEY ARE RUN FLAT TIRES (WHICH MY CAR INITIALLY HAD ON THEM). WHEN I PURCHASED THE CAR, RUN FLATS WASN'T ON THIS CAR. I THINK THERE SHOULD BE A RECALL ON THESE WHEELS (RIMS) BECAUSE IF THE RIM FAILED WHILE ON THE HIGHWAY...IT COULD HAVE BEEN DEVASTATING.

NHTSA complaint #10587605 — an unverified report by a vehicle owner.

at 22,000 miles Louisville, KY

WHEELS

ALUMINUM WHEEL (STYLE 296) CRACK ON THE INSIDE BEAD. CAR HAS 22,000 MILES ON 1/23/14 AND 3 WHEELS CURRENTLY HAVE CRACKS. THE CRACKS PREVENT THE TIRES FROM MAINTAINING AIR PRESSURE AND LOWERS THE STRUCTURAL INTEGRITY OF THE RIM, CAUSING A SAFETY HAZARD. BMW IS ONLY OFFERING TO REPAIR ONE WHEEL UNDER WARRANTY BECAUSE THE RUNOUT ON THE OTHER 2 WHEELS WAS 0.059" WHICH THEY ARE CLAIMING INDICATES THAT THE WHEELS ARE DAMAGED DUE TO A ROAD HAZARD BUT OFFERED NO VISUAL EVIDENCE OF DAMAGE. ONLINE RESEARCH INDICATES THERE IS A HIGH RATE OF FAILURE OF THE 296 STYLE WHEEL AND CONTRIBUTING FACTORS INCLUDE THE DESIGN OF THE 19" WHEEL, THE USE OF 30 SERIES (REAR) OR 35 SERIES (FRONT) RUN-FLAT-TIRES AND THE NEGATIVE CAMBER. THE NEGATIVE CAMBER PUTS THE MAJORITY OF THE FORCES AND LOAD FROM THE ROAD ONTO THE INSIDE BEAD OF THE RIM. THE RUN-FLAT-TIRES HAVE EXTREMELY STIFF AND SHORT SIDEWALLS TO ALLOW THE TIRES TO BE DRIVEN WITH NO AIR, WHICH TRANSMITS THE FORCES FROM THE ROAD DIRECTLY TO THE RIM WITHOUT THE NORMAL CUSHION OF A STANDARD TIRE. THE DESIGN OF THE RIM DOES NOT ADD ADDITIONAL STRENGTH TO THE INSIDE BEAD TO MAKE UP FOR THE ADDITIONAL LOADS CAUSED BY THE CAMBER AND RUN-FLAT-TIRES.

NHTSA complaint #10561274 — an unverified report by a vehicle owner.

at 23,000 miles Clearwater, FL

WHEELS

I HAD A SLOW TIRE LEAK SO I TOOK MY CAR IN TO GET CHECKED. TURNS OUT MY 2 REAR WHEELS ARE CRACKED.THIS IS COMMON PROBLEM FOR OWNERS WITH THE 296 WHEEL ON THE Z4.

NHTSA complaint #10532245 — an unverified report by a vehicle owner.

Garland, TX

WHEELS

MY REAR RIMS HAVE DEVELOPED CRACKS WHILE DRIVING RESULTING IN QUICK LOSS OF TIRE PRESSURE AND IN SOME CASES DESTROYING TIRE. THIS HAS HAPPENED TO BOTH THE LEFT AND RIGHT SIDES, HOWEVER THUS FAR HAS ALWAYS BEEN ISOLATED TO THE REAR (MODEL 296 19") RIMS. IN THE 16 MONTHS I HAVE OWNED THIS VEHICLE, THIS HAS HAPPENED SEVERAL TIMES INCLUDING ON 5/11/2012, 9/9/12, 4/12/13 AND 5/23/13. EACH TIME I HAVE PURCHASED A NEW RIM OR HAD THE EXISTING RIM REPAIRED AT THE DISCRETION OF THE DEALER. IN NONE OF THESE CASES HAS THERE BEEN ANY IMPACT OR DRIVING CONDITION THAT EXPLAINS THE FAILURE.

NHTSA complaint #10513346 — an unverified report by a vehicle owner.

Garland, TX

STEERING

MY REAR RIMS HAVE DEVELOPED CRACKS WHILE DRIVING RESULTING IN QUICK LOSS OF TIRE PRESSURE AND IN SOME CASES DESTROYING TIRE. THIS HAS HAPPENED TO BOTH THE LEFT AND RIGHT SIDES, HOWEVER THUS FAR HAS ALWAYS BEEN ISOLATED TO THE REAR (MODEL 296 19") RIMS. IN THE 16 MONTHS I HAVE OWNED THIS VEHICLE, THIS HAS HAPPENED SEVERAL TIMES INCLUDING ON 5/11/2012, 9/9/12, 4/12/13 AND 5/23/13. EACH TIME I HAVE PURCHASED A NEW RIM OR HAD THE EXISTING RIM REPAIRED AT THE DISCRETION OF THE DEALER. IN NONE OF THESE CASES HAS THERE BEEN ANY IMPACT OR DRIVING CONDITION THAT EXPLAINS THE FAILURE.

NHTSA complaint #10513346 — an unverified report by a vehicle owner.

at 15,000 miles Ashland, VA

WHEELS

I HAD TWO OF THESE RIMS BEND AND CRACK ( MODEL 296) I HAD THE RIM AND TIRE WARRANTY THAT I PAID EXTRA FOR AND BMW COVERED A REPLACEMENT FOR ONE AND PAID TO HAVE THE OTHER STRAIGHTENED.

NHTSA complaint #10483777 — an unverified report by a vehicle owner.

at 18,000 miles Orinda, CA

WHEELS

BOTH REAR WHEELS DEVELOPED CRACKS. THESE WERE 19 INCH BMW STYLE 296 WHEELS WITH RUN-FLAT TIRES.

NHTSA complaint #10482880 — an unverified report by a vehicle owner.

at 16,000 miles Orinda, CA

WHEELS

THIS PROBLEM AFFECTS WHEEL STYLE "296" A 19" OPTIONAL ALLOY WHEEL PACKAGE FOR E89 BMW Z4. BMW PART NUMBER 36116785257(REAR WHEEL 19X9) AND 36116785256(FRONT WHEEL 19X8. UNDER NORMAL DRIVING CONDITIONS, MULTIPLE CRACKS DEVELOPED ON INNER EDGE OF RIM LIP LEADING TO LARGE DROP IN TIRE PRESSURE AND POTENTIALLY UNSAFE DRIVING CONDITION. THIS HAPPENED TO (1) OF MY REAR WHEELS. AFTER DOING RESEARCH, I STRONGLY BELIEVE THIS IS A MANUFACTURERS DEFECT AS MANY OWNERS OF THE SAME PARTICULAR WHEEL MODEL "296" ARE EXPERIENCING THE SAME PROBLEMS. IT IS NOTED IN THE FOLLOWING LINK: HTTP://E89.ZPOST.COM/FORUMS/SHOWTHREAD.PHP?T=485935 CONTACTED BMWNA CUSTOMER RELATIONS AND THEY DECLINED TO PROVIDE ASSISTANCE.

NHTSA complaint #10475288 — an unverified report by a vehicle owner.

at 17,000 miles Martinsville, IN

WHEELS

THIS PROBLEM AFFECTS WHEEL STYLE "296" A 19" OPTIONAL ALLOY WHEEL PACKAGE FOR E89 BMW Z4. BMW PART NUMBER 36116785257(REAR WHEEL 19X9) AND 36116785256(FRONT WHEEL 19X8. UNDER NORMAL DRIVING CONDITIONS, CRACKS DEVELOPED ON INNER EDGE OF RIM LIP LEADING TO DROP IN TIRE PRESSURE AND POTENTIALLY UNSAFE DRIVING CONDITION. THIS HAPPENED TO (1) OF MY REAR WHEELS. AFTER DOING RESEARCH, I STRONGLY BELIEVE THIS IS A MANUFACTURERS DEFECT AS MANY OWNERS OF THE SAME PARTICULAR WHEEL MODEL "296" ARE EXPERIENCING THE SAME PROBLEMS. IT IS NOTED IN THE FOLLOWING LINK: HTTP://E89.ZPOST.COM/FORUMS/SHOWTHREAD.PHP?T=485935 CONTACTED BMW AND THEY DECLINED TO PROVIDE ASSISTANCE.

NHTSA complaint #10446207 — an unverified report by a vehicle owner.

at 16,000 miles Maple Grove, MN

WHEELS

THIS PROBLEM AFFECTS WHEEL STYLE "296" A 19" OPTIONAL ALLOY WHEEL PACKAGE FOR E89 BMW Z4. BMW PART NUMBER 36116785257(REAR WHEEL 19X9) AND 36116785256(FRONT WHEEL 19X8. UNDER NORMAL DRIVING CONDITIONS, MULTIPLE CRACKS DEVELOPED ON INNER EDGE OF RIM LIP LEADING TO LARGE DROP IN TIRE PRESSURE AND POTENTIALLY UNSAFE DRIVING CONDITION. THIS HAPPENED TO (1) OF MY REAR WHEELS. AFTER DOING RESEARCH, I STRONGLY BELIEVE THIS IS A MANUFACTURERS DEFECT AS MANY OWNERS OF THE SAME PARTICULAR WHEEL MODEL "296" ARE EXPERIENCING THE SAME PROBLEMS. IT IS NOTED IN THE FOLLOWING LINK: HTTP://E89.ZPOST.COM/FORUMS/SHOWTHREAD.PHP?T=485935 CONTACTED BMWNA CUSTOMER RELATIONS AND THEY DECLINED TO PROVIDE ASSISTANCE.

NHTSA complaint #10436662 — an unverified report by a vehicle owner.

at 11,200 miles Herndon, VA

ELECTRICAL SYSTEM

TL* THE CONTACT OWNS A 2009 BMW Z4 CONVERTIBLE. THE CONTACT WAS DRIVING APPROXIMATELY 10-20 MPH WHEN THE VEHICLE STALLED WITHOUT WARNING. HE WAS ABLE TO IMMEDIATELY RESTART THE VEHICLE WITHOUT HESITATION. THE VEHICLE WAS NOT REPAIRED. THE FAILURE WOULD OCCUR INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE COMPUTER WAS REPLACED. THE CONTACT STATED THAT THE VEHICLE WOULD NO LONGER OPERATE FOLLOWING REPAIRS. THE VEHICLE WAS LEFT WITH THE DEALER WHERE THE CONTACT WAS AWAITING FURTHER DIAGNOSIS. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 11,000 AND THE CURRENT MILEAGE WAS 11, 200.

NHTSA complaint #10356178 — an unverified report by a vehicle owner.

at 11,000 miles Herndon, VA

ENGINE AND ENGINE COOLING

I AM LEASING A 2009 Z4 BMW, THE ENGINE CAR STALL WHILE DRIVING THIS HAPPENED TWICE IN A PERIOD OF 2 WEEKS, I ALMOST HAVE A CAR CRASH BEHIND IN BOTH OPPORTUNITIES, THANKS THAT THE TRAFFIC WAS VERY SLOW, THE SECOND TIME I HAVE TO GO OUT THE ROAD. I BROUGHT THE CAR THE FOR SERVICE, THEY WERE ABLE TO REPRODUCE THE FAILURE, AFTER ONE WEEK AT THE SHOP THEY SAY IT WAS A COMPUTER FAILURE, THEY REPLACE THE COMPUTER HOWEVER AFTER 2 WEEKS THE CAR STILL IN THE SHOP I HAVE CALL SEVERAL TIMES TO CUSTOMER SERVICE AND THE SERVICE SHOP BUT I DON'T GET ANY SPECIFIC ANSWER OF WHAT IS GOING ON, I FEEL I DON'T HAVE ANY RIGHTS AS A CONSUMER AND IN THE OTHER HAND I AM CONCERNED FOR MY SAFETY SINCE THEY SAID THEY DON'T GUARANTEE THIS WON'T HAVEN AGAIN EVEN IF THE CAR IS FIXED. DO I HAVE ANY RIGHTS AS A CONSUMER OR I HAVE TO ACCEPT THIS SITUATION.

NHTSA complaint #10356054 — an unverified report by a vehicle owner.