Vibration on 50-70mph

Econ

the more things you put in between wheels and the hub, the more vibrating that will occur.

I had spacers and rings and i was vibrating a little. then i hit a pothole and actually knocked off some of my weights, so the wheel was unbalanced...this caused A LOT of vibrating between 50 - 70

9 times out of 10, you need to make sure the wheels are properly balanced.

i completley eliminated vibrations from hub centric wheels and a proper balance

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2014 Triumph Thruxton 900
2013 Fiat 500 Abarth
2009 Nissan 370z