Hydrolic suspension, careful with that though, there are places that have strict regulation prohibiting that type of equipment and activity, such activities could be considered reckless, and could carry a hefty fine like drag racing, and reckless driving, big trouble, you dont want to lose your license over something so foolish
car will bounce alot if the shock absorbers are dameged or blown.
Lowering the springs of a car will cause the tires to bounce.
Generally, they don't make a sound. When you go over a bump, and your car keeps going "bounce, bounce, bounce" several times before it settles down, your shocks are shot. The shock absorber's job is to damp the car's springs - the springs are the real "shock absorbers". The actual shock absorber is supposed to stop the spring after the first "bounce".
Probably bad shocks.
Use a hand or foot to bounce the bumper on each corner of the car. Does it stop after 1 bounce (good) or does it keep bouncing 2 or 3 times (bad).
You could have worn out shocks or stuts
Starting with any one corner of the car, force the car to bounce as hard as you can. If the car continues to bounce more than one and a half times after you stopped forcing it, the shock or strut in that corner is gone bad. Test each corner.
About the only thing that will cause the wheel to bounce on any car is the strut being bad.
use a bounce dryer sheet. It works!
Perform the 'bounce test' by placing a hand on a corner of the car bumper and pushing down as hard as you can. The bumper should bounce up once and settle back down again with no further bouncing.
Immediately make the check good.
The title track from the group consisting of the lyrics 'bounce bounce bounce' is Rainbow.