Electric Car Vehicles

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Serious warning – Car tires may have a hidden defect that could cause drivers to lose control on the road.

A lot of us think that if our car tires look good, are properly inflated and have a good amount of tread, that they are probably safe to go out on the road with.

But few drivers ever think about the age of their tires – as we are about to learn, this can be a tragic mistake.
Tires, especially the spare tire, could be up to a decade old, making them an accident waiting to happen. A ten year old tire can have deteriorated to the point of having rotted inside, when the tire is used at highway speeds the effect can be disastrous.

“In tires, the materials that hold the belts together — the rubber materials — will degrade and lose its elasticity, and those properties will get to the point where the tire can no longer hold together,” said vehicle safety advocate Sean Kane. Also, in warmer climates tires start to break-down even earlier. Six years, or older, is when we start to see a disproportionate rise in tire failures. An American government report on tire aging, analysing insured tire claims from several states, found that 84 percent of claims were for tires over 6 years old.Even never used tires, such as those bought from the showroom floor, in the same age bracket, are just as dangerous, as they may indeed have been sitting there for a decade or more, just waiting to be sold.

Many auto-makers now put warnings in their new-car manuals, warning against using tires more than 6 years old. What is really needed are expiration dates stamped on the product, similar to many other consumer products, from washing machines to yogurt.

The tire industry disagrees, stating that expiration dates will only give consumers a false sense of security, Dan Zielinski from the ‘Rubber Manufacturers Association’ says: “Consumers may view the use-by-date as the minimum service-time they can use that tire, no matter what they do to it – whether they care for it or not, or have worn it to the nub.”

Tire-makers say proper maintenance is the key to safe tires and that there is no reliable data available showing tires becoming dangerous after 6 years.

So, where does this leave the consumer? I have some invaluable information to pass on to you!

On the outer wall, or side-wall of the tire, the bit that faces away from the car, are a series of four raised numbers and letters (actually manufactured with the tire). The last series of four numbers actually shows the “birth-date of the tire”. e.g. if it shows 1501, this means on the 15th week of 2001 is the date of manufacture.

Safety experts advise that if a tire does fail, the driver should not slam on the brakes, this can cause the vehicle to swerve out of control, pulling suddenly toward the affected tire, nor should drivers jerk the wheel back, possibly causing the car to roll.

Drivers should immediately back off the accelerator and gently pull the wheel back to straighten the car applying the brakes carefully once the car has slowed to a manageable speed.

Since their invention in the 1950s, up through development during the 1970s and finally institution as a required feature in the 1980s, airbags have become an important factor in decreasing injuries of those involved in automotive accidents. Airbags function as supplemental safety devices designed to work with seat belts to minimize injuries in vehicle accidents. In theory, airbags reduce the chance that the occupant of a vehicle’s upper body or head will strike the vehicle’s interior during a crash, thus decreasing the incidence of injury. Both frontal and side-impact air bags are designed to deploy in moderate to severe crashes.
During a car accident various sensors throughout the vehicle determine the severity of the crash. An onboard computer, called the Electronic Control Unit (ECU), processes the information and, in an event of moderate to severe crash, it sends a signal to the inflater inside the air bag module. At that point the airbag is supposed to inflate, protecting the vehicle’s occupants from serious injury as a result of striking the vehicle’s interior. As a result of the effectiveness of initial driver and passenger front airbags, the adoption of rear-passenger and side-impact curtain airbags has become more common over the last decade, in an attempt to create the highest degree of safety possible.
Unfortunately, as the number of airbags being placed in new cars has increased, so has the overall need for the airbags themselves. Thus, more airbags are manufactured and the overall quality of the airbags produced has seen some degree of decline. One way this decrease in quality has become apparent is in the increasing incidence of defective airbags and airbag failure in automobiles produced both in the United States and abroad.
Because drivers usually never have the chance to test the airbags in their vehicle until the airbag’s functionality becomes a matter of life or death, the possibility of defective airbags has lead manufacturers of a variety of automobiles to issue recalls for the airbags in the vehicles. If there exists a possibility that the airbags might malfunction or there might occur airbag failure.
The following is a non-comprehensive list of airbag failure-related automobile recalls instituted in April through June of 2007 from the National Highway Traffic Safety Administration (NHTSA):
April 2007
BMW is recalling 225 MY 2007 6-Series passenger vehicles for failing to conform to the requirements of Federal Motor Vehicle Safety Standard No. 208, ‘Occupant Crash Protection. The front passenger seat has a sensing system that detects if the seat is occupied. This sensing is programmed to detect if the seat is occupied by a small adult or certain child restraint seats. Placing certain child seats on the front passenger seat is designed to result in the automatic deactivation of the front seat passenger’s airbag. In some cases, the sensing system may misinterpret a properly seated small adult as one of these specific child seats, resulting in deactivation of the front passenger airbag when the airbag might be beneficial for the adult, increasing the risk of injury in a crash.
May 2007
DaimlerChrysler is recalling 270,958 MY 2005 Town and Country and Dodge Caravan minivans originally sold in or currently registered in the 27 states plus the District of Columbia that use greater amounts of salt for winter road deicing. The up-front (UF) airbag sensors that contain brass bushings installed in these vehicles may corrode and crack allowing water to enter the sensor. These sensors provide enhanced air bag performance in certain types of frontal crashes. In one of these crashes, with one or both of the vehicle’s UF sensors inoperative, the occupants will not benefit from the enhanced air bag protection that these sensors would provide.
Hyundai de Puerto Rico is recalling 2,967 MY 2005-2007 Tucson vehicles. Static airbag deployment testing conducted by NHTSA using fifth percentile female dummies indicated that a small stature adult driver not wearing a seat belt and involved in a frontal or near frontal crash, the deployment of the driver air bag may result in an insufficient margin of compliance as measured by the test dummy used in the NHTSA test. This can cause increased risk of injury to the driver under certain crash conditions.
June 2007
DaimlerChrysler is recalling 798 MY 2007-2008 Sebring and MY 2008 Dodge Avenger vehicles. The front seat track position sensors utilized for the air bag system may not function properly. This could increase the risk of injury to front seat occupants during certain crash conditions.
DaimlerChrysler is recalling 39 MY 2007 Dodge and Freightliner Sprinter 2500 and 3500 trucks. The window airbag module diffuser material may contain hairline cracks. In the case of a crash with a trigger signal for the window airbag module, it is possible that such a diffuser may crack at the beginning of the airbag activation.
As one can see from this small sampling of the defective airbag recalls that have been instituted either voluntarily by auto makers, or at the insistence of the NHTSA, there are many occasions in which one or many of the airbags installed in a vehicle will not operate as intended and therefore be a defective airbag that might cause an airbag failure in an accident.