As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT ADVANCED POWER LEVERS AND RECEIVED NORMAL INDICATIONS THROUGHOUT THE TAKEOFF ROLL. AT APPROXIMATELY 70 KNOTS THE AIRCRAFT EXPERIENCED SEVERE VIBRATIONS AND THE TAKEOFF WAS ABORTED. MX CHANGED NOSE WHEELS, SERVICED SHIMMY DAMPER AND TIGHTENED THE STEERING COLLAR. PERFORMED HIGHSPEED TAXI AT 80 KTS NO ISSUES.