Suspension systems are for the most part pretty similar depending on the type of vehicle (four wheel drive vs. two wheel drive, front wheel drive vs. rear wheel drive.) The suspension system is what keeps you from feeling every rock and pot hole in the road. Although the suspension is responsible for creating a comfortable ride, it's main function is to provide the best possible amount of friction between your car and the road, and assist the steering in being the most efficient it can be. Further, it also effects the braking capabilities of vehicles and can contribute to poor stopping power. Most often suspension problems are related to the Strut's or Shocks being bad.