What are the three primary functions of a motor vehicle's suspension system?

1. To support vehicle weight, cushion road shocks, and maintain wheel contact with the road.
2. To regulate engine speed, lubricate wheel bearings, and cool the brake rotors.
3. To lock the differential, steer the front wheels, and charge the battery.
4. To store exhaust gases, balance the driveshaft, and align the transmission gears.