Suspension hitting hard

So this will be my second post on these forums so im kinda new .

I just recently purchased a 2007 Taco pre-runner with only 20k miles on it. The day I brought it home the suspension seemed kinda rough. When I go over speed bumps at what seems like a normal speed I would take a speed bump at (10-15 mph) the truck seems to almost bottom out aka hits really hard. I have an extended warranty on it so I might just take it to the dealership, but when and if I go I would like to have an educated suggestion as to the problem and a possible solution. Does anyone have a clue as to what might cause this problem? I could always just be concerned about nothing.

btw these forums are awesome and hopefully I can start to contribute to them shortly.

Thanks

 

ya if its the back then you are probably hitting the bump stops and need the rear tsb done

 

Yeah its the back end. and the suspension is stock

 

what consists of doing the rear tsb? not exactly suspension savy.

 

Thanks for the help. Solving car problems while in estimating class = priceless

 

Yes...The Icon AAl will add a pretty close amount to both..but the TSB springs seem to sit between .5 and 1 inch higher. Different results for different folks.

 

What are these Icon AAI's?

 

I prob coulda figured that one out if my brain wasnt fried from block estimating lol