bottoming out??!, what do you guys think of this? Options

[jcengland]

basically my car has been lowered, apparently its 40 but looks more like 60mm, anyway if i go over a fairly big bump or dip at 25mph+ it will give a nasty knock and feels like it has totally bottomed out, either the sump brace hits the floor or the springs have completely compressed.

Now the question is do you think my car needs new springs (which i think is the case as it is not a bouncy ride) or do you think i need new shocks?

Personally i think i need a new set of "correct springs" i susspect the wrong springs have been fitted, i.e the front has not the correct spring rate or they are old and fategued.

any comments appricaited cheers joe

[jcengland]

surely shocks/dampers only control the rate at which the displacment takes place, i.e the rate of displacement with respect to time(force x velocity). But springs control displacemt which is not relative to time, just a displacemtnt, i.e the force requuierd to displace the spring by say (x) will always be the same, i.e 200kg per mm.

now my car is not bouncy whcih suggests the shocks are not blown. If the springs did their job even without dampers the car should not bottom out as the maximum load should not exceed the maximium spring rate, it would simply be bouncy.