Hey guys,
I have a 2007 SR5 2wd. After looking through many threads and not finding something that has worked for me, I decided to post my own. I'm having trouble diagnosing a harsh/choppy ride. This mainly occurs over smaller, uneven bumps in the road, which is to be expected but I wouldn't think to the level I am experiencing.
Here is my current set up:
Front -
- Dobinsons MRR 3 way adjustable coilovers (HS compression on softest, LS on 2 clicks, rebound 2 turns)
-JBA UCA
- 4" lift spindle
- Stock front bumper
Rear -
- Toytec Superflex 2" coils with 1.5" daystar spacer
- Dobinsons gs59-575 long travel twin tube shocks
- Stock rear bumper
Tires -
Pro Comp Sport AT 285/70/17 load range D
2 weeks ago I did a front end over haul with new inner & outer tie rods, UCA ball joint, new oem LCA, and the dobinsons coilovers. This is coming from Bilstein 5100's in the front and OME 885 coils which were topping out and the ride was horrible on top of worn LCA bushings and loose inner tie rods. After I installed the new parts, I could tell the handling/ride improved over bigger bumps but the harshness over uneven terrain or cracks in the road is still pretty rough and I can feel everything. I have adjusted both compression knobs as well as rebound but it still does not fix the problem, although it helps slightly when on softest. Took it to an alignment shop after the install and the tech said it lined up nicely.
My best guess is that it is the load range D tires with ~65,00 miles on them (even set to 30 psi, normally about 35) which have some slight uneven wear due to alignments not being perfect because of worn LCAs and previous over extended geometry with the 885's. This, along with added unsprung weight of the beefy 4" spindles. The rear is smoother than the front but still not great, most likely due to solid rear axle but still choppy which leads me to believe it is probably tires.
I came across a thread yesterday that suggests it could be UCA bushings binding, which I linked below. During install, while the UCA was disconnected I noticed that there was a good amount of resistance after pushing it about 10 deg. above parallel to the ground. I might loosen the thru bolt and drive up and down the driveway and see if that does anything.
Sorry for the long read but please let me know if you have any suggestions or if this is just the way it's gonna be, thanks!
Link to thread:
bouncy ride after new LCA install?