(formerly) 03 H6 OBW , (presently) 06 WRX Sportwagon & 2021 Honda CR-V
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19,680 Posts
are the tires in good condition, recently balanced?
at those speeds though, it would be quite possible to have axles or driveshafts and other components contribute to vibration. And weak struts may also have less ability to keep tires firmly planted. Bushings are also getting worn so, it may be tricky pinning it down.
Is this a seat-of-the-pants vibration? is the steering wheel vibrating? if you 'coast' in neutral is the vibration still there?
If you regularly travel at speeds like this, I believe there are ways to have a highspeed balance done on the wheels. And a 'tuner' with a 4WD dyno might be able to help you.
at those speeds though, it would be quite possible to have axles or driveshafts and other components contribute to vibration. And weak struts may also have less ability to keep tires firmly planted. Bushings are also getting worn so, it may be tricky pinning it down.
Is this a seat-of-the-pants vibration? is the steering wheel vibrating? if you 'coast' in neutral is the vibration still there?
If you regularly travel at speeds like this, I believe there are ways to have a highspeed balance done on the wheels. And a 'tuner' with a 4WD dyno might be able to help you.