I recently switched over (6,500 highway miles ago) to a set of OME 891 springs in my rear end. I also slung on some 295/75 r 17 nitto trail grapplers.

I recently noticed when going over speed bumps and "jarring" the rear end , (10-15mph hits) my rear end wiggles for a good 20 to 30 feet. I have a sneaking suspicion this is not a good thing.

the best way to describe it is a wobble or a springy feeling. Is it the new springs being springy? I do NOT have a pan hard drop bracket installed, but I have been looking for an excuse to install one. Is this the cause?
3" toytec ultimate lift.

Thanks

 

They say after a lift if you leave the stock pan hard bar stock the rear end will feel squirrelly. I have 890's and my pan hard is stock. Feels fine to me. Mine definitely does not wiggle for 30 feet after a bump. Did you remove the pan hard during install of the lift? Maybe it's loose?