Following a recent test at its South Bend, IN test track, Tire Rack has published a report analyzing the effectiveness of eco-friendly, low rolling resistance (LRR) tires. It confirms that LRR tires are an effective way for to save money while reducing carbon emissions through increased fuel efficiency.
As tire manufacturers continue to release eco-friendly products, Tire Rack decided to conduct a Real World Economy Run to determine whether LRR tires were effective at increasing fuel efficiency. The test, used a fleet of Toyota Prius hybrids fitted with Goodyear Integrity all-season radial tires as a baseline. This was then compared to other eco-friendly and standard tire models for fuel efficiency and traction.
Each tire was driven over 550 miles om a 6.6-mile loop of expressways, highways and side roads. The Prius outfitted with the baseline tire achieved 51.4 mpg.
|Tire Line||Test MPG*||% vs. Baseline|
|Michelin Energy Saver A/S||53.8||+4.74%|
|Bridgestone Ecopia EP100||53.5||+4.74%|
|Yokohama dB Super E-Spec||52.8||+2.81%|
|Goodyear Assurance Fuel Max||51.6||+0.37%|
|Michelin HydroEdge with Green X||51.1||-0.59%|
|Goodyear Assurance ComforTred||50.0||-2.64%|
During the test, the difference between the lowest and highest recorded mpg would result in an annual saving of about 21 gallons of regular gasoline at a cost of about $52.50 (at $2.50/gallon) for drivers traveling 15,000 miles a year.
The fuel economy recorded for each tire and its relative position compared to the Integrity tire’s average is available at www.tirerack.com/mpgtest While ways of achieving lower tire rolling resistance had previously traded wet traction and/or treadwear, further tests at Tire Rack has also shown that the newest high-tech, fuel-efficient tires have achieved savings without compromising traction, thanks to the introduction of new tread compounds, tire designs and weight optimization.