4runner/Tacoma Billstien 4600 valving difference?

[024rnrSport]

Ended up with 04 Tacoma TRD coils in front and really like the ride. They ride stiffer than the 4runner springs but it seems to have a slight oscillation about 65mph. My Tacoma did not do this with same exact springs and Tacoma Billstein 4600s. Specs seem very similar but curious if the Tacomas are valved stiffer.

Thoughts?

 

[ToyTec Lifts]

So you have 04 Tacoma coils on your 3rd gen 4Runner with slight oscillation around 65mph?

Can you describe the oscillation? That should NOT be happening.

 

[024rnrSport]

Yes. 04 Tacoma coils on 02 4runner with 4runner 4600s. Oscillation may not be the correct term... it just feels like many small vibrations and less connected (lighter if you will) at highway speed. Nothing scary feeling just not as "heavy" as it does at lower speed. When I owned the Tacoma it did not have this feeling at all. Only difference, besides the obvious model difference, is the Tacoma/4runner 4600s.