Goodyear unveils new EV-optimized tire technology

Goodyear presented a prototype of a new tire design optimized for EVs at the recent Geneva International Motor Show. The EfficientGrip Performance with Electric Drive Technology is to go on sale in Europe by 2019.

Goodyear’s testing has revealed that traditional tires can wear out up to 30% faster on EVs, due to the powerful instant torque of electric motors and the additional weight of heavy battery packs. Automakers are also pressing for lower rolling resistance on EVs as a result of consumer demand for increased range. Ride noise and comfort resulting from tires is another consideration, as EVs generate as little as half the amount of noise as traditional vehicles at lower speeds.

Goodyear’s new tire design offers improved performance in all of these areas through three main design features. First, extended mileage is achieved through the use of thinner sipes (small channels), which allow more rubber to contact the road surface than traditional radial grooves do. The tread design also prevents sound waves from entering its grooves, reducing interior and exterior tire noise.

Second, the tire cavity shape has been altered to support the increased weight of EVs. Lastly, the material properties of the tread compound have been tuned for ultra-low rolling resistance to extend vehicle range while coping with high levels of torque. Also, the sidewall has been redesigned to reduce aerodynamic drag, and the profile yields less rotating mass, resulting in reduced energy consumption.

 

Source: Goodyear

 

  • Ben Tech

    I eagerly await to see improved tires on the market since I’ve been looking to buy better tires to increase range AND reduce road noise. Glad to see Goodyear is working on this.

  • freedomev

    Tires can increase, decrease range by 30% easily o must be chosen with care.
    Since EVs are so quite, tire noise makes a large amount of what is left.
    EV like to buy used Prius take OEM off tires as older tires have even less rolling drag. I’d like to see a LRR tire comparison to get real data on tires one can get.

    • Gyrogordini

      What is “LRR”?
      Also @reedomev, it would really help the rest of us if you check your posts before submitting them, as they often are very hard to follow (on other ev sites as well!)

      • bytrain

        LRR = Low rolling resistance.

  • Ormond Otvos

    I smell a higher price, also…what are the decreases in rolling resistance, in percentage increases or mpg, compared to regular LRRs?

  • mipak

    Probably not so good in the rain and snow. Northern climates take notice!

    • Knut Erik Ballestad

      You would use a separate set of tires in the winter anyway in northern climates

  • Steven Bodo

    Don’t EVs also have an acceleratir pedal that lets you control the output? I think they do. With that out of the way, are they trying to say they just now discovered that the more you drive like a maniac (full power), the more your tires will wear? Wow!

  • https://churchofthebluedome.wordpress.com Carlo Luri

    You don’t need to drive aggressively to destroy tires on an EV. I think the regenerative braking is also adding to excessive tire wear. I had the factory Bridgestones on my i3 and they were destroyed by 15k miles. I would gladly pay more for a tire that lasts 50 – 60k (with a warranty). Rolling resistance and noise are just bonuses.