Narrative:

During takeoff at rotation, aircraft vibrated. Checked instruments -- all normal and retracted gear -- also normal. Told departure control we may have hit something and to check runway. Continued on flight and was notified by center control it was a tire and it was being run down to maintenance for identify. The flight from ZZZ to cmh is approximately 35 flight mins, so we waited to hear if it was ours or somebody else's. On descent, aircraft vibrated. As precaution, declared an emergency and lowered gear early, notified company through air/ground, and told approach we were going to do a fly-by to assure that there were tires on all gear. There was and we executed a normal pattern and landed. On subsequent walkaround #3 inboard tire tread had separated. Maintenance was sent down to inspect and replace tire and aircraft nacelle. We then received ferry permit and brought aircraft back to ZZZ. Supplemental information from acn 515307: it was still unclr whether the tire debris came from our aircraft. A beech 1900D that departed after our aircraft contacted us to say that they saw the tire on the runway but it appeared too large to come off a beech 1900D. The captain decided that the best course of action would be to declare an emergency. I concurred. The captain requested that emergency vehicles be present as a precautionary measure. Tower viewed all tires on main and nose gear to be present and intact. At this time we executed a go around followed by a normal approach and landing. On postflt inspection, I viewed the right inboard main tire tread had completely separated from the tire itself. The tread was not present, however, the tire still held normal pressure. It was not flat. During the first preflight, I noticed that the right inboard main tire appeared to be new. The passenger were not aware of any irregularities. We felt that because the aircraft checked out normally during first approach it was not necessary to alarm them. We do not have a flight attendant aboard and needed to focus on our cockpit duties. We did explain situation to passenger as they exited the aircraft in columbus.

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Original NASA ASRS Text

Title: A BEECH 1900D IN CRUISE DECLARED AN EMER DUE TO GEAR VIBRATION AND POSSIBLE LOSS OF MAINT TIRE ON TKOF.

Narrative: DURING TKOF AT ROTATION, ACFT VIBRATED. CHKED INSTS -- ALL NORMAL AND RETRACTED GEAR -- ALSO NORMAL. TOLD DEP CTL WE MAY HAVE HIT SOMETHING AND TO CHK RWY. CONTINUED ON FLT AND WAS NOTIFIED BY CTR CTL IT WAS A TIRE AND IT WAS BEING RUN DOWN TO MAINT FOR IDENT. THE FLT FROM ZZZ TO CMH IS APPROX 35 FLT MINS, SO WE WAITED TO HEAR IF IT WAS OURS OR SOMEBODY ELSE'S. ON DSCNT, ACFT VIBRATED. AS PRECAUTION, DECLARED AN EMER AND LOWERED GEAR EARLY, NOTIFIED COMPANY THROUGH AIR/GND, AND TOLD APCH WE WERE GOING TO DO A FLY-BY TO ASSURE THAT THERE WERE TIRES ON ALL GEAR. THERE WAS AND WE EXECUTED A NORMAL PATTERN AND LANDED. ON SUBSEQUENT WALKAROUND #3 INBOARD TIRE TREAD HAD SEPARATED. MAINT WAS SENT DOWN TO INSPECT AND REPLACE TIRE AND ACFT NACELLE. WE THEN RECEIVED FERRY PERMIT AND BROUGHT ACFT BACK TO ZZZ. SUPPLEMENTAL INFO FROM ACN 515307: IT WAS STILL UNCLR WHETHER THE TIRE DEBRIS CAME FROM OUR ACFT. A BEECH 1900D THAT DEPARTED AFTER OUR ACFT CONTACTED US TO SAY THAT THEY SAW THE TIRE ON THE RWY BUT IT APPEARED TOO LARGE TO COME OFF A BEECH 1900D. THE CAPT DECIDED THAT THE BEST COURSE OF ACTION WOULD BE TO DECLARE AN EMER. I CONCURRED. THE CAPT REQUESTED THAT EMER VEHICLES BE PRESENT AS A PRECAUTIONARY MEASURE. TWR VIEWED ALL TIRES ON MAIN AND NOSE GEAR TO BE PRESENT AND INTACT. AT THIS TIME WE EXECUTED A GAR FOLLOWED BY A NORMAL APCH AND LNDG. ON POSTFLT INSPECTION, I VIEWED THE R INBOARD MAIN TIRE TREAD HAD COMPLETELY SEPARATED FROM THE TIRE ITSELF. THE TREAD WAS NOT PRESENT, HOWEVER, THE TIRE STILL HELD NORMAL PRESSURE. IT WAS NOT FLAT. DURING THE FIRST PREFLT, I NOTICED THAT THE R INBOARD MAIN TIRE APPEARED TO BE NEW. THE PAX WERE NOT AWARE OF ANY IRREGULARITIES. WE FELT THAT BECAUSE THE ACFT CHKED OUT NORMALLY DURING FIRST APCH IT WAS NOT NECESSARY TO ALARM THEM. WE DO NOT HAVE A FLT ATTENDANT ABOARD AND NEEDED TO FOCUS ON OUR COCKPIT DUTIES. WE DID EXPLAIN SIT TO PAX AS THEY EXITED THE ACFT IN COLUMBUS.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.