Can't shake the vibrations of my front driveshaft 2.5 teraflex coil lift and adjustable lower control arms.


I have the lca set a 23" and I have Vibrations at 45 and 75 mph.

I have used AEV drop brackets in the past and have had no vibration but lost ground clearance.

 

Are you sure it's from the front? If you haven't already, pull the front shaft and drive without it. Hard to chase vibes with both installed.

If it is the front, then all you can do is reduce caster a small amount at a time until the vibes are gone. Then decide if you can live with the flightyness...it will always be a tradeoff.

-Adam

 

Agreed.

Also, are you running stock uppers in front? 23" lowers are pretty long at 2.5" of lift. Your caster is likely 6*+

 

All the previous suggestions are good and worth looking at. Just wanted to add looking at tire balancing; vibrations at specific speed can be as simple as a wheel out of balance.