Reports submitted to NHTSA by owners and drivers, shown in full
Data refreshed
Complaints on fileComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
15
Latest May 11, 2026
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
2
Filed in the last 12 monthsReports filed with NHTSA in the trailing 365 days. Recent volume reflects attention and vehicle age as much as anything else.
1
Reports on file since Dec 14, 2005
What this page shows
Our database holds 15 NHTSA owner-reported complaints for the 2006 Harley-Davidson Flhtcui. Each one is a report filed by an owner or driver and published by NHTSA without most of them being verified. A complaint is not a confirmed defect, not a recall and not a manufacturer bulletin. Narratives are shown exactly as filed.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Complaints, most recent first
Showing 1–15 of 15
Brakes
Filed May 11, 2026
Rear brakes. Can place rider in extreme danger it the event of a crash when losing rear brakes due to a hole in the brake line caused by friction against the clutch cable in factory routing of the line and cable. I called Harley Davidson customer service to see is I could get help to resolve my issue due the fact that this issue is the same basic problem as the current Recall Number: The campaign number is 26V234000, with Harley-Davidson's internal recall number XXX. Harley Davidson denied my request for help. While researching repair parts on the web, I discovered the current recall as noted above. I also read (on the web) that many others have experienced the same issue. There were no warnings other than a soft pedal. A Harley Davidson Dealer video attached also outlines this issue, as it is the exact problem I have. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA ID
11737094
Incident
Apr 1, 2026
Electrical
Filed Feb 21, 2019
2006 HARLEY DAVIDSON. CONSUMER WRITES IN REGARDS TO INCORRECT MILEAGE ON MOTORCYCLE. *LD *TR
NHTSA ID
11174173
Incident
Nov 21, 2018
Brakes
Filed Sep 20, 2010
MY 2006 HARLEY DAVIDSON ULTRA CLASSIC FRONT BRAKE LINE FAILED. THE MOTORCYCLE HAS 8,2XX MILES. I SQUEEZED THE FRONT BRAKE LEVER AS I WAS STARTING THE BIKE AND FELT THE LEVER FULLY DEPRESS. I SAW BRAKE FLUID SQUIRT ON THE BIKE AND ONTO MY LEG. MY MECHANIC SAYS HE HAS HEARD OF THIS PROBLEM FROM OTHER MECHANICS. I AM THE ORIGINAL OWNER. *TR
NHTSA ID
10356518
Incident
Sep 15, 2006
Mileage
8,257 mi
Engine
Filed Mar 4, 2010
FAILURE HAS NOT OCCURED ON MY BIKE HOWEVER NUMEROUS REPORTS FROM OTHERS AND DEALER RECOMMENDATION TO HAVE CAM CHAIN TENSIONERS CHECKED BECAUSE AS I WAS TOLD, IT IS NOT A QUESTION OF WHETHER BUT WHEN THEY WILL FAIL. FAILURE RESULTS IN IMMEDIATE LOSS OF POWER WHICH UNDER HIGHWAY CONDITIONS, FOR EXAMPLE WOULD LEAD TO DECELERATION, AS IN PASSING OR MERGING ONTO A FREEWAY. CONSEQUENTLY, PROBABILITY IS HIGH THAT COLLISION WILL OCCUR RESULTING IN DEATH OR SEVERE INJURY TO THE RIDER. THUS IT APPEARS TO BE A SAFETY ISSUE BUT IT IS NOT BEING ADDRESSED AS SUCH AND UNLESS AN OWNER OF A TWIN CAM 88 BIKE IS AWARE OF THE POTENTIAL FOR DISASTER, THE DEALERS NOR THE HOME OFFICE HAVE NOTIFIED HARLEY OWNERS TO MY KNOWLEDGE. THIS HAS BEEN A KNOWN DIFFICULTY FOR SEVERAL YEARS AND IF YOU ARE FORTUNATE TO HAVE AVOIDED A CRASH AND GOTTEN YOUR BIKE TO A DEALER FOR UPGRADED TENSIONERS IT STILL REMAINS THAT WE OWNERS HAVE BEEN LEFT HANGING WITHOUT INFORMATION UNLESS WE CALL AND THEN ARE SADDLED WITH A HIGH COST TO REPAIR WHAT IS A MANUFACTURERS DEFECT KNOWN TO THE MANUFACTURER. AS FAILURE HAS NOT OCCURED I HAD TO SUBMIT NUMBERS IN REQUIRED FIELDS IN ORDER TO GET THE COMPLAINT STATED. I APPOLOGIZE FOR THE DISPARITY BUT WANT YOU TO BE INFORMED. I INTEND TO CONTACT THE COMPANY AND REQUEST SATISFACTION FOR MYSELF AND OTHER RIDER/OWNERS BEFORE DEATHS OCCUR. SOME MAY HAVE ALREADY BUT BEEN FILED AS UNKOWN CAUSE OR RIDER ERROR OR SOME OTHER FICTION. *TR
NHTSA ID
10316874
Incident
Mar 4, 2010
Mileage
42,000 mi
Body & structure
Filed Jan 21, 2010
2006 HARLEY DAVIDSON FLHTCUI. BROKEN UPPER FAIRING MOUNTS. FAILURE OF THESE MOUNTS (BREAKING AT ONE OR BOTH ENDS ON BOTH LEFT AND RIGHT SIDE OF INNER FAIRING) RESULTS IN CATASTROPHIC VIBRATION CAUSING LOSS OF CONTROL. I HAVE JUST EXPERIENCED THIS PERSONALLY AND I CAN ATTEST THAT HUNDREDS OF OTHERS INVOLVING SEVERAL OTHER YEAR MODELS HAVE BEEN REPORTED IN ONLINE HARLEY DAVIDSON WEBSITES. HARLEY DAVIDSON CORPORATE ADMITS TO NO MANUFACTURING FAULT, YET IT HAS REDESIGNED THESE MOUNTS AND NOW EMPLOYS A MUCH HEAVIER VERSION FOR LATER YEARS. THIS FAIRING MOUNT FAILURE IS PRESENT ON ANY HARLEY DAVIDSON MODEL INCORPORATING A FAIRING. I DO NOT KNOW WHAT YEAR HD WENT TO THE STRONGER MOUNTS BUT HD HAS NEVER OFFERED REPLACEMENTS TO THOSE WITH A KNOWN PROBLEM. I BELIEVE I CAN FAIRLY SAY THAT ALL FAIRING EQUIPPED HD MODELS USING THE OLD-STYLE MOUNTS HAVE HAD FAIRING MOUNTS BREAK. *TR
NHTSA ID
10301813
Incident
Jan 21, 2010
Mileage
10,461 mi
Brakes
Filed Aug 12, 2008
BRAKE LINE WAS FOUND TO BE CHAFFED FROM RUBBING ON THE CLUTCH LINE WHICH IS BUNDLE TOGETHER. THIS RESULTED IN A APPROXIMATELY 1/8" HOLE IN THE BRAKE LINE. FOUND WHEN CHANGING THE BRAKES. *TR
NHTSA ID
10237897
Incident
Aug 3, 2008
Mileage
31,000 mi
Engine
Filed Jul 15, 2008
INNER CAM BEARING FAILED ON MY 2006 HARLEY DAVIDSON ULTRA CLASSIC. THE MOTOR HAD TO BE COMPLETELY REBUILT INCLUDING NEW BEARINGS, OIL PUMP, CAMSHAFTS. CAM COVER AND ALL GASKETS. *TR
NHTSA ID
10234473
Incident
Jun 27, 2008
Mileage
29,000 mi
Brakes
Filed Feb 28, 2008
TL*THE CONTACT OWNS A 2006 HARLEY DAVIDSON FLHTCUI. THE CONTACT STATED THAT THE LINING OF THE BRAKE PAD FELL OFF AFTER IT RUSTED. WHILE DRIVING 4 MPH, THE FRONT BRAKE LEVER EXTENDED COMPLETELY DOWN AND THE CONTACT HAD TO USE THE REAR BRAKES TO STOP. THE CONTACT TOOK THE VEHICLE TO A REPAIR SHOP AND HAD THEM REPLACE THE SHOES IMMEDIATELY AFTER THE FAILURE. HARLEY DAVIDSON HAS NOT BEEN NOTIFIED. THE PURCHASE DATE AND ENGINE SIZE WERE UNKNOWN. THE CURRENT MILEAGE WAS 29,680 AND FAILURE MILEAGE WAS 28,140. UPDATED 03/18/08. *LJ THE CONSUMER STATED THE BRAKE PAD WAS FALLING APART. UPDATED 03/18/08 *TR
NHTSA ID
10219389
Incident
Sep 23, 2007
Mileage
28,140 mi
Tires & wheels
Filed Aug 9, 2007
I AM WRITING ABOUT A BRAND NEW DUNLOP D402 MU85B16 SW TIRE I BOUGHT FOR MY 2006 (HARLEY DAVIDSON) FLHTCUI IN PREPARATION FOR A NEARLY 3700 MILE ROAD TRIP. THE TRIP WENT JUST FINE, FOR ABOUT THE FIRST 450 MILES. AT THAT POINT THE TIRE, WHICH HAD LESS THAN 500 MILES TOTAL USE, SELF- DESTRUCTIVE. THE TIRE TREAD SEPARATED FROM THE INNER CORE ( PHOTOGRAPHS CAN BE PROVIDED). THE RUBBER TREAD ?FLAPPING? AGAINST THE WIRING HARNESS UNDER THE REAR FENDER ENTIRELY SEVERED THE WIRING. BY SEVERING THE WIRING HARNESS, OF COURSE, THE TAIL LIGHTS, BRAKE LIGHTS AND INSTRUMENT PANEL (SPEEDOMETER, TACHOMETER AND ODOMETER) WERE DISABLED. THE DUNLOP TIRE REPRESENTATIVE WOULD NOT ACCEPT ANY RESPONSIBILITY SINCE WE DID NOT SHIP THE TIRE TO THEM TO DETERMINE IF THE FAILURE WAS DUE TO MATERIAL AND/OR WORKMANSHIP. I AM WOULD LIKE TO KNOW IF THERE IS ANY RECOURSE FOR BUYING A TIRE THAT SELF-DESTRUCTS. WE ARE FORTUNATE THAT THE TIRE DID NOT BLOW OUT WHEN THE TREAD SEPARATED. CONSIDERING THE TREAD SEPARATION OCCURRED ON AN INTERSTATE HIGHWAY, THE CONSEQUENCES OF A BLOWOUT COULD HAVE BEEN SEVERE INJURY OR DEATH TO EITHER MYSELF, MY WIFE (WHO WAS A PASSENGER), OR BOTH. *JB
NHTSA ID
10198972
Incident
Jun 15, 2007
Mileage
8,017 mi
Brakes
Filed Dec 8, 2006
I WAS PREPARING TO STOP AT A TRAFFIC LIGHT ON MY 2006 HARLEY DAVIDSON FLHTCUI WHEN MY FRONT BRAKE LEVER LOST ALL FEELING AND MOVED TO THE HANDLE BAR. FURTHER INVESTIGATION REVEALED THE BRAKE MATERIAL HAD SEPARATED FROM THE BACKING PLATE. NOW, I HAVE HAD A SECOND BRAKE PAD, ON THE REAR BRAKE DO THE SAME WITH THE BRAKE MATERIAL SEPARATING FROM THE BACKING PLATE. NEITHER SET OF BRAKES WAS BELOW THE WEAR LIMIT. THIS TYPE OF INCIDENT COULD VERY EASILY RESULT IN A CATASTROPHIC DEATH OR INJURY. *JB
NHTSA ID
10175580
Incident
Sep 10, 2006
Mileage
12,000 mi
Fuel system
Filed Oct 16, 2006
Crash reported1 injury reported
MOTOR STUMBLES, COUGHS, DIES FOR NO REASON. MOTORCYCLE DIES WHEN TURNING AND FALL OVER ON MY LEG CAUSING INJURY. HARLEY DAVIDSON DEALER SAYS CANT FIND PROBLEM. *NM
NHTSA ID
10171022
Incident
Aug 20, 2006
Mileage
35 mi
Tires & wheels
Filed Sep 21, 2006
Crash reported1 injury reported
THE CONSUMER LOST CONTROL OF HIS 2006 HARLEY DAVIDSON ULTRA CLASSIC WHEN THE REAR TIRE WENT FLAT. THE VEHICLE BEGAN TO FISHTAIL AND CRASHED INTO A CONCRETE WALL. *TS THE VEHICLE'S LEFT HEADLIGHT, LEFT FRONT PEGS, SEAT, LEFT DRY BOX, LEFT SIDE AND HANDLE BAR WERE DAMAGED. *NM
NHTSA ID
10169109
Incident
Aug 14, 2006
Brakes
Filed Aug 26, 2006
REAR BRAKE FAILURE AT APPROXIMATELY 14, 630 MILES, DUE TO CORROSION OF BRAKE SHAFT PIVOT ARM. UNIT NO LONGER HAS GREASE FITTING. I CAN FIND NO SERVICE INTERVAL SPECIFICATION FOR THIS PART. REPAIRED UNDER WARRANTY BY HARLEY-DAVIDSON TECHNICIAN IN BLUE SPRINGS, MO. *JB
NHTSA ID
10166611
Incident
Aug 16, 2006
Mileage
14,630 mi
BrakesDriver assistanceExterior lighting
Filed Jan 26, 2006
MOTORCYCLE ELECTRONIC SPEEDOMETER AND TACHOMETER LOST POWER (NEEDLES TO ZERO). FOUND THAT BRAKE LIGHTS, TURN SIGNALS, AND EMERGENCY FLASHER LIGHTS WERE ALSO A NONFUNCTIONAL, LEAVING ME UNABLE TO RENDER ANY OF THE STANDARD WARNINGS OF STOPS, TURNS OR TROUBLE.*AK HD MECHANICS BELIEVE THAT THE FAILURE WAS THE SPEEDOMETER AND SAY THAT THE FAILURE IMPACTS THE LIGHTS AS THE TURN SIGNALS' AUTO SHUTOFF IS INTEGRATED WITH THE SPEEDOMETER. I THINK THAT THIS DESIGN IS FAULTY DO TO THE LACK OF REDUNDENCY OR SEPARATENESS IN THE CIRCUIT WHICH ALLOWS A SINGLE FAILURE TO WIPE OUT ALL SAFETY AND LEGALLY REQUIRED LIGHTS HD IS REPLACING SPEEDOMETER IN HOPES OF REMEDIATING ELECTRICAL FAILURES.
NHTSA ID
10148742
Incident
Jan 7, 2006
Mileage
1,200 mi
Engine
Filed Dec 14, 2005
2006 ULTRA CLASSIC HAS SMOKED SINCE DAY I BOUGHT IT! HAD ONLY 2 MILES ON IT WHEN I WAS GIVEN THE PDI BY SALESMAN. BIKE IS STILL SMOKING ON STARTUP WHEN COLD. SO FAR HARLEY'S ONLY ANSWER IS TO WRENCH MY ENGINE, WHICH IN ESSENCE MEANS I HAVE PURCHASED A USED BIKE FOR A NEW PRICE! *JB
NHTSA ID
10145151
Incident
Nov 26, 2005
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.