New research from AAA reveals that worn tires can cause a deadly hazard for motorists in wet weather. Performance testing at various highway speeds revealed that average stopping distances are increased a staggering 43% - an additional 87 feet - for worn tires, compared to new.
The key difference is traction. Tire treads literally connect a car to the road, and in wet conditions worn tires will completely lose contact and skid (or hydroplane). Current industry guidelines and state laws frequently recommend that drivers wait until tread depth reaches 2/32” to replace tires. Yet AAA’s study tested new tires against tires worn to 4/32”- higher than most recommendations - and found increased stopping distance, and a reduction in handling ability on wet pavement.
John Paul, senior manager for traffic safety at AAA Northeast, says drivers should look to replace their tires when the tread depth reaches 4/32” - when stopping distances have already begun to deteriorate. “Waiting longer can be hazardous,” he adds. “Today’s vehicles are built to go longer between routine maintenance checks, so drivers may not be alerted to the tread wear on their tires until it’s too late.”
A simple test is to slip an upside-down quarter between tire grooves - on the outside, in the middle, and on the inside of the tire. If you can see all of Washington’s head on the quarter, you need to start shopping for tires.
For the complete report, please click here.
If Dorothy oiled the Tin Man with synthetic oil, he probably wouldn’t have rusted on the way to the Emerald City. That’s because new research by AAA Automotive Engineering on engine oil quality revealed synthetic oil outperformed conventional oil by an average of nearly 50%. What does this mean for members? For only about $5 more a month, synthetic oil will provide significantly better engine protection than conventional oil.
While consumers don’t generally want to spend additional money on synthetic oil changes (about $70 vs. $38 for a conventional oil change), the long-term benefits are worth considering.
“It’s understandable that drivers may be skeptical of any service that’s nearly twice the cost of the alternative,” said John Paul, senior manager for traffic safety at AAA Northeast. “But, while manufacturer-approved conventional oils won’t harm a vehicle’s engine, the extra $30 per oil change could actually save money in the long run by protecting critical engine components over time.”
The Car Doctor also points out, “If you are a DIYer, the difference in prices between conventional and synthetic make the switch to synthetic oil an easy decision.”
Synthetic oils have superior resistance to deterioration, and AAA’s research showed they would especially benefit newer vehicles with turbocharger engines and vehicles that tow heavy loads, operate in extreme temperatures, or are frequently driven in stop-and-go traffic.
While only a few vehicles require synthetic oil, Paul says all vehicles would benefit from making the switch. “Upgrading to synthetic oil is not merely a selling ploy by repair shops,” adds Paul. “More than 80% of service professionals use synthetic oil in their own personal vehicles because they know the value it has on the long-term health of the automobile.”
The study focused on eight industry-standard ASTM (American Society for Testing and Materials) tests that evaluated the quality of both synthetic and conventional engine oils in terms of shear stability, deposit formation, volatility, low-temperature pumpability, oxidation resistance and oxidation-induced rheological changes.
You may not be aware, but every time you use your vehicle’s navigation or touch screen audio systems, get a diagnostics report or maintenance reminder, or have your doors unlocked remotely by OnStar, you’re using telematics. Telematics is the use of wireless information to enable your car to interact with the outside world.
For the most part, telematics has made driving safer and more enjoyable with enhancements such as:
“Telematics is a growing sector in the automotive landscape,” says John Paul, senior manager for traffic safety at AAA Northeast. “It offers many benefits to drivers, such as convenience, comfort and safety. But the use of telematics brings concerns that many in the industry haven’t fully addressed yet.” Any information that can be scanned from a car’s computer system can be transmitted. This includes engine performance, vehicle location, even the driver’s weight. For example, telematics can monitor driving behavior. Some big insurance names use this information to offer discounts based on how you drive, when you drive and where you drive. This usage-based car insurance (UBI) provides more competitive auto insurance quotes if the technology deems you a “safe driver.” While this may be economical for most AAA members, several experts have raised concerns about potential discrimination, privacy issues and the potential for unfair surcharges.
Many new telematic features in vehicles, like infotainment options and touch screens, can be a distraction to drivers. A 2013 AAA Foundation for Traffic Safety study found that these types of vehicle interactions are among the most distracting for drivers, and a 2015 AAA study of teen drivers found distracting behavior a leading cause (58%) of all crashes.
“Automakers will have to work on ways to reduce the risks and minimize distractions for all drivers,” continues Paul. “And government officials, insurance companies and individual drivers will have to sort through the complicated issues that come with monitored driving behavior.”
Nearly nine out of 10 consumers agree that automakers should continue to improve the fuel efficiency for all vehicles, and believe that fuel economy is the area with the most room for improvement in their current vehicle.*
“There are many ways car companies can make their vehicles more fuel efficient,” says John Paul, senior manager for traffic safety at AAA Northeast. “Downsizing engines, improving aerodynamics, and selling more electric and fuel cell-powered vehicles are a few examples. But one of the biggest changes will be to reduce the weight.”
More and more, manufacturers are adopting aluminum alloys and other lightweight materials to shave pounds off their vehicles. In fact, the amount of aluminum used in cars is expected to increase significantly by 2025, according to a recent study published by the consulting and research firm Ducker Worldwide. Components are being retooled in lighter high-strength steel, aluminum, plastic and composites. Every pound counts; studies have shown that reducing vehicle weight by 10% can improve gas mileage by 6 to 8%.
The new BMW i3 electric car may be the poster child for light weighting. The compact four-seater weighs a svelte 2,635 pounds, despite carrying a 500-pound battery pack. This was accomplished by using a carbon fiber passenger compartment and aluminum subframes that carry the battery and powertrain.
Despite using some similar materials, you needn’t worry that modern vehicles will crumple like soda cans. Lightweight cars and trucks will still be safe thanks to high-strength metal alloys and high-tech composites such as carbon fiber. These materials can be just as strong as heavier materials, and with proper engineering, they are often even better at absorbing collision impact energy.
“Despite carrying higher sticker prices, lightweight vehicles will use less fuel over the life of the car, allowing consumers to recoup the higher costs,” states Paul.
Collision repair costs and insurance premiums may also go up due to special training and equipment needs, though some experts believe the difference will be minor since the portion of most insurance premiums devoted to collision repair is small. In the end, both consumers and the environment will benefit from lightweight vehicles. That’s a diet we can probably all agree on.
*Source: Consumers Union National Vehicle Fuel Economy Poll, June 2017.