Computers, combined with companies' extensive research and development, have produced safe vehicles that are easy and safe to drive. The most cited types of equipment failure are loss of brakes, tire blowouts or tread separation, and steering/suspension failure. With the exception of the recent rash of Firestone light-truck tire failures, combined totals for all reported equipment failure accounts for less than 5% of all motor vehicle accidents. .
• Brakes - Modern dual-circuit brake systems have made total brake failure an unlikely event. If one side of the circuit fails, the other side is usually sufficient to stop a vehicle. Disc brakes,found on the front wheels of virtually every modern vehicle, are significantly more effective than the older drum braking systems, which can fade when hot. ABS (Anti Blockier System) or anti-lock brakes prevent the wheels from locking up during emergency braking maneuvers, allowing modern vehicles to avoid many accidents that previously would have occured. .
• Tires - Today's radial tires are significantly safer than the bias-ply tires of 25 years ago. They still, however, need attention regularly. Underinflation, the most frequent cause of tire failure, is considered the main culprit in the recent Firestone tire-failure fatalities. Uneven or worn-out tires are the next most serious problem and can also lead to tire failure. Uneven wear is caused by improperly balanced tires, or misaligned or broken suspensions. Remember, all that keeps you connected to the roadway is your tires. If you don't check your own, have your mechanic check them every 5,000 miles. .
• Steering & Suspension - Your suspension keeps your tires in contact with the roadway in a stable and predictable manner. Your steering enables you to go around road obstacles and avoid potential accidents. Even a safe, well-trained driver is helpless in the event of a steering or suspension system failure.