If your vehicle is showing ride feels extremely harsh, feeling every crack in the road, here are the most likely causes and the parts you'll need to fix each one.
Tires inflated well beyond the recommended pressure on the door placard will act like solid rubber, transmitting every bump and crack directly into the cabin. This frequently happens after a service where a technician overfills them.
Shocks and struts are designed to absorb road impacts. When they fail, leak out their hydraulic fluid, or internally seize up, the vehicle loses its dampening ability and will crash harshly over bumps.
If suspension bushings are fully tightened while the vehicle is lifted in the air, the rubber twists and binds when the car is lowered to the ground. This pre-loads the suspension, creating an incredibly stiff and harsh ride.
Rubber isolators sit between the suspension springs and the vehicle body to absorb vibrations. When they rot away or compress completely, metal-on-metal contact occurs, making the ride feel harsh and noisy.
Installing heavy-duty springs or high-capacity shocks on a light-duty vehicle drastically increases the spring rate. While great for towing, it results in a punishing, rigid ride when the vehicle is unloaded.