Narrative:

Upon landing at ZZZ on runway xxr to complete a round-robin VFR flight to ZZZ1; on the rollout as I was almost slowed enough to make the turnoff to taxiway X; I experienced a violent vibration in what seemed to be the nose gear. At the time I had the yoke pulled full back to relieve braking pressure on the nose gear and was applying braking force. When the shimmy occurred; I eased the braking force to try to minimize the shimmy. However; in doing so; I was unable to make the turn onto the exit taxiway.at the time; I was aware that there was another plane on approach to landing behind me on runway xxr. Not certain exactly what was causing the vibration and realizing that the next available turnoff was a good distance away; my instinct was to clear the runway immediately to clear the way for approaching landing traffic.so I pulled off the runway into the grassy area and came to a stop between the runway and taxiway Y just past exit taxiway X. ZZZ tower ATC advised [me] to stay where I was and that the emergency equipment was on the way. I had not declared an emergency.on inspection; we could not immediately determine the cause of the vibration because the nose gear was embedded up to the fairings in soft mud under the grass caused by recent rains in the area. That was not visually apparent until stepping onto the grass.the emergency truck arrived and determined there were no injuries to me or to my single passenger. The runway was closed to traffic pending removal of my airplane from the runway environment.the tower contacted my landlord FBO to send a tow. The tow got instantly stuck in the mud; requiring a second tow to pull it out. The emergency crew then contacted the ZZZ airport manager's office; which in turn contacted an outside towing company with experience in towing aircraft.the outside tow truck was delayed for an estimated two hours due to being stuck in traffic from a football game; which had ended almost precisely as the time of this landing. He eventually arrived and towed the plane to the runway surface; where the FBO tow took over and towed the airplane to the hangar. On inspection; the cause of the violent shimmy was a blown tire on the nose gear.there was no damage to the plane nor to any airport ground equipment/structures; and there were no injuries involved.I made a split-second decision to pull off the runway into the grass believing that the safest recourse in the situation was to remove my aircraft from being a hazard on the runway.

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Original NASA ASRS Text

Title: C172 pilot reported that upon landing a violent shimmy occurred due to a blown nosewheel tire. The pilot was unable to exit on a taxiway and elected to turn onto a grassy area; clear of the runway; where the aircraft came safely to a stop.

Narrative: Upon landing at ZZZ on Runway XXR to complete a round-robin VFR flight to ZZZ1; on the rollout as I was almost slowed enough to make the turnoff to Taxiway X; I experienced a violent vibration in what seemed to be the nose gear. At the time I had the yoke pulled full back to relieve braking pressure on the nose gear and was applying braking force. When the shimmy occurred; I eased the braking force to try to minimize the shimmy. However; in doing so; I was unable to make the turn onto the exit taxiway.At the time; I was aware that there was another plane on approach to landing behind me on Runway XXR. Not certain exactly what was causing the vibration and realizing that the next available turnoff was a good distance away; my instinct was to clear the runway immediately to clear the way for approaching landing traffic.So I pulled off the runway into the grassy area and came to a stop between the runway and Taxiway Y just past exit Taxiway X. ZZZ Tower ATC advised [me] to stay where I was and that the emergency equipment was on the way. I had not declared an emergency.On inspection; we could not immediately determine the cause of the vibration because the nose gear was embedded up to the fairings in soft mud under the grass caused by recent rains in the area. That was not visually apparent until stepping onto the grass.The emergency truck arrived and determined there were no injuries to me or to my single passenger. The runway was closed to traffic pending removal of my airplane from the runway environment.The Tower contacted my landlord FBO to send a tow. The tow got instantly stuck in the mud; requiring a second tow to pull it out. The emergency crew then contacted the ZZZ Airport Manager's office; which in turn contacted an outside towing company with experience in towing aircraft.The outside tow truck was delayed for an estimated two hours due to being stuck in traffic from a football game; which had ended almost precisely as the time of this landing. He eventually arrived and towed the plane to the runway surface; where the FBO tow took over and towed the airplane to the hangar. On inspection; the cause of the violent shimmy was a blown tire on the nose gear.There was no damage to the plane nor to any airport ground equipment/structures; and there were no injuries involved.I made a split-second decision to pull off the runway into the grass believing that the safest recourse in the situation was to remove my aircraft from being a hazard on the runway.

Data retrieved from NASA's ASRS site 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.