Assessment: Coils and Sway Bar Bushings Need Replacement
(Posted this on another thread in response to these same questions.)
Thanks Brian2sun, techno, champ306, hossmaster, and others for your suggestions.
Brought the 4Runner to a Toyota Dealer Service to have this checked (no diagnostic fee). Extremely experienced service manager took the time to provide direct analysis (on ground and on lift) covering all the points posted here.
1. Coils are definitely "tired" and rear is sagging slightly (noticeable when side-by-side to another 4Runner with new stock coils). Indicated by residual bounce, sagging rear, and ability to squeeze the rear coils by hand.
Will also replace a number of other bushings related to this replacement just in case.
2. Sway bar bushings are "worn" - there's a slight space where the bushing doesn't touch a portion of the sway bar allowing movement of the bar
3. Tie rods are fine
4. Ball joints are fine
5. Rack bushings are fine
6. New Bilstein shocks look fine - no leaks
Plan to purchase Toyota OEM coils (front and rear), sway bar bushings (front and rear), related other bushings, from ToyotaPartsZone.com... Approximately $400 + shipping. About 20% off list from this online vendor.
Original equipment (OEM) coils seems to be recommended on this and other threads for same height needs (no lift needed) + Bilstein HD shocks. Moog, Raybestos, and Husky Springs also make OEM replacement coils (about 50% the cost of Toyota OEM).
Thanks again!
Regards,
Glen