Driver-Side Lean Correction: Pre-Load vs Spacer?

After lifting on adjustable coilovers (2.5s + 1" Eibach rear springs), I've got some driver-side lean. The OEM suspension (TRD Pro Fox shocks) has different spring perch heights on the front. The driver side looks to be about 1/2" higher than the passenger side. I didn't notice anything in the rear on the OEM setup to correct lean. But maybe the OEM springs are different lengths or they use a different mount for driver vs passenger side? I'm referring to the conical looking mount that the springs go over.

Anyway, with the new setup is it better to simply adjust pre-load in the front to remove lean, or use a rear spacer, or both?

I'm planning on adjusting pre-load anyway to lift the front a little, as the springs have settled a bit.

 

always better to go pre-load first and then a spacer (if needed) should your preload exceed the shocks max recommended ride height (ex on a 2.5/3" coilover dont exceed 3" of lift). this usually equate to about 1/4 in preload adjustment since the ratio tends to be 2:1 in that 1/4" preload adjustment equates to 1/2" ride height lift. Too much preload can cause “coil binding” or coil clash which is where the coils on the spring rub/ collide under compression. this is usually plenty to correct driver side lean. Personally, I ended up needing both due to alot of added weight (compressor, fridge, waterport, some steel driver side brackets on my rack, etc). I have the Elka 2.5" DSC shocks on my rig with Toytec HD 2" rear springs and ended up adding a Toytec TP14 Front Top Plate Spacer to the front with extended studs and a Dobinson Rear Poly Coil Spring Spacer to the driver rear. The other thing I ended up doing is adding rear Airbags using the AirLift 1000 Air Spring Kit. This lets me dial in the rear perfectly when under heavy load or towing to reduce sag https://www.headstrongoffroad.com/s...Plate_Spacers_(Factory_Mount)_-_EXTSTUDF.html
https://dobinsonusa.com/products/do...gen-fj-cruiser-prado-120-150-lexus-gx470-460/
https://www.airliftcompany.com/shop/60804