Wore out stock suspention?

i have an 06 tacoma full trd off road packages with the trd bilstein shocks my truck now has 56000 miles on it . In my opinion i think the shocks are wore out, How can i tell?
my truck..
-vibrates at high speed
-jerks to the left or right when i hit pot holes or bumps
-feels likes its struggling for traction or going side ways around turns but the tires arent spinning rapidly
-steering wheel pulls sideways if im off road and do drifts and hit bumps(hard to explain)
what r some other signs and r these suspention or just my imagination

 

more than likely at least the rear leafs are beat.
but 56k on stocks its probly time to change it.
when you hit a bump does it keep on bouncing for a bit? then thats bad shock absorbers/struts.
your vibes n bump steering could be things are worn and /or you need an alignment and balance.
good luck

 

yaa and it bottoms out if i hit dips sorta fast and off roading if im going fast the trucks floats up and down im thinking i just need to replace absorbers and leaf springs etc im saving up to buy king suspention

 

Beef it up get rid of the the soft stock suspention

 

sounds like an alignment problem too.