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Vibration at speeds between 40-47mph

Motor Vehicle Maintenance & Repair Asked by ifadey on August 24, 2020

I went on a road trip of about 870 miles. I hit a speed bump at night because I couldn’t see it due to absence of road lights. I applied brakes aggressively as soon as I saw the speed bump and I think the vehicle speed was about 25 mph when it hit the bump.

After the incident, the front tires of the vehicle started bouncing (minor bounce, not severe) between speed range of 40 mph – 47 mph. The bounce goes away after this speed range.

I will be traveling back after couple of weeks but I am worried whether this is a serious issue or not. I am in a remote area right now and I am thinking whether to get the vehicle checked by a mechanic on my way back in some city.

2 Answers

Hitting a bump at speed can cause several problems:

  • Tire or wheel damage: generally this requires a replacement tire or wheel
  • Suspension damage: a suspension member could have been bent or damaged by the impact
  • Alignment problems: this isn't damage, just needs a re-alignment
  • Lost wheel balancing weights: this is easily fixed by getting the wheels re-balanced

There's no way to be sure which it is without taking it to a mechanic. The first 2 are potentially dangerous, you don't want a tire disintegrating on you or a ball joint failing at speed. Alignment problems aren't generally hazardous unless they are really bad, but they can lead to tires being prematurely worn. A tire out of balance you can live with, but do you really want to drive 870 miles with an annoying vibration?

You have to get it fixed either where you are or when you get back, getting it fixed now is the safest and most sensible option.

Correct answer by GdD on August 24, 2020

You should probably check your tires as it is one of the reasons why you feel a vibration when driving your car.

Answered by 1claire on August 24, 2020

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