Whazzz up X5 world.

I accidentally drove my 02 X5 over a deep pothole in NYC (I'm sure some of you guys know the adverse driving conditions us newyorkers go through) and afterwards my steering wheel began vibrating. The intensity of the vibration would increase as the speedometer increased - I stop running the car and restarted and noticed that the vibration ceased. Two days later I hit a smaller pothole and the vibration started again. I checked the tires which are fine so I'm not sure what the issue maybe.

Any ideas X5 World?

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Ariwood