As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB OUT, AFTER NOSE GEAR ROTATED, A PULSATING VIBRATION FELT ON COCKPIT FLOOR. AFTER LEVEL FL280 AND DESCENT STILL FELT VIBRATION BUT NOT AS BAD. RT NOSE TIRE ASSY OUT OF ROUND. PERFORMED NLG AND DOORS INSPECTION IAW AMM 32-20-00. NO DEFECTS NOTED. FOUND LT NOSE TIRE ASSY OUT OF ROUND. REMOVED AND REPLACED THE LT NOSE TIRE ASSY IAW 32-49-01-000-801-A. REMOVED AND REPLACED THE RT NOSE TIRE ASSY IAW WC 32-49-01-000-801-A.