Your struts and springs are worn out. You're basically bottoming out the strut. And of course, your car sits lower because of the 'wornage' so you have to take bumps slower.
My car is doing the same. Excessive body roll, bottom outs on bumps and shit. And I only weigh 95lbs... I'm waiting for $$$ for coilovers.
My car is doing the same. Excessive body roll, bottom outs on bumps and shit. And I only weigh 95lbs... I'm waiting for $$$ for coilovers.