Toyota Corolla Tyre Speed Rating H & V

• 

  rocketpoweredmice on 18/11/2020 - 23:31

  +3

  Yes, as long as the speed rating is equal to or higher than the tire placard states, you're all good

  • 

    IDontKnowWhyImHere on 19/11/2020 - 11:35

    Thanks for the input and about placard. Just checked in the car and it stats 'Not less than H'.

  • 

    rocketpoweredmice on 20/11/2020 - 23:33

    Replying to myself to keep this info prominent.
    Suggest reading this as a brief overview of speed ratings. http://www.jags.org/TechInfo/2001/05May01/tires/tirecapabili…

    Speed ratings are a safety rating, and indicate the tires ability to survive/withstand the prescribed speed and load for a duration of time (30 minutes), and that it has been tested to this speed.
    This is because tires get hot as you drive around, and the faster you go, the hotter they get. The hotter the tire gets, the more likely it is to structurally fail/blowout.

    A speed rating does NOT imply anything about the tires "performance" (eg. grip, stopping distances, longevity, cold weather performance, wet weather performance).
    It does imply that the carcass/belt structure of the tire has been designed with these speeds/loads in mind. This may have some incalculable effect on other parameters (mileage, weight), but it is only 1 factor of many in the tires construction. There are much much much better ways to assess those characteristics (eg. milage/weight/grip) of the tire.

    Although very limited in its testing methodology, the ONLY thing that is written on the side of your tire that will give any indication of its "performance" is the UTQG (Uniform Tire Quality Grading) markings which will give a rough indication treadwear (lifespan, higher is better), traction (coefficient of friction on wet asphalt, AA is highest), temperature (ability to dissipate heat at highway speeds, A is highest).

    But better than that, research/reviews is much more informative.
    https://www.tirerack.com/tires/reviews/ is a good place to start, although they have a lot of tires not applicable to our climate (USA gets proper winters).
    More in depth reviews from the Germans (Auto Bild) can be found in English here: https://www.tyrereviews.co.uk/Article/2020-Auto-Bild-Summer-…

• 

  pantsparty on 19/11/2020 - 07:13

  +2

  Yes a higher speed rating is fine.

  Make sure you take advantage of the current buy 3 get 1 free deal on that tyre model, deal ends 30 November:

  https://www.bobjane.com.au/promo/bridgestone-buy-3-get-1-fre…

  • 

    IDontKnowWhyImHere on 19/11/2020 - 11:35

    Thank you, Yes, I have got the quote with buy 3 get 1 free.

• 

  jackinyourbox on 19/11/2020 - 09:29

  +1

  Higher rating tyrees are better

  • 

    IDontKnowWhyImHere on 19/11/2020 - 11:35

    Thanks

  • 

    Euphemistic on 19/11/2020 - 12:11

    +2

    Why are they better? It’s not like the average corolla gets anywhere near 210km/h let alone 240.

    You May be compromising on other aspects to get a higher speed rating. Eg lower rating might be lighter in construction which would save (very small amounts) of fuel or increase acceleration time.

    Bigger, faster, stronger isn’t always better.

    • 

      jackinyourbox on 19/11/2020 - 13:30

      +1

      There’s no one type that meets every need. Ie wear, grip, speed, load. Etc.

      If you want to make that point you should choose a specific tyre design which is lighter than the rest of the similar rating.

      Higher speed ratings are tested up to that rating and continue to still remain safe. Typically that design will be of a specific rubber compound that is stickier/grippy than a lower speed rating tyre.

      I’m not sure what your priorities are, however I would choose a tyre that grips well and decreases stopping distances.

      • 

        Euphemistic on 19/11/2020 - 15:19

        -1

        The higher speed rating may also mean the rubber is stickier than another tyre, but it may also mean the rubber has a higher softening point that may compromise slow speed grip. Race cars with high speed tyres need to warm them up for best grip which means higher than normal traffic speeds.

        Recommending a v rated tyre for Granny to go to church on Sunday isn’t the best tyre for the job just because v is ‘better’ than h.

        I too prefer a tyre that grips well and decreases stopping distances, but at normal speeds not track speeds. Of course we are only discussing one aspect of tyre design. There are a myriad of features that all interact to provide a good tyre in different ways.

        • 

          jackinyourbox on 19/11/2020 - 19:19

          @Euphemistic: Nah.

          TESTED UP TO THAT SPEED. Not at speed.

          Soft tyres generally grip better because they contour to surfaces more and have a higher surface contact area. Harder tyres don’t deform as much so less contact area.

          Heating race slicks is to attain optimal performance only.

          All this is in general. I’m sure you’ll find another theory and eventually all this would turn to a Great Wall of text so I’m not writing anymore to convince you.

          I’m also sure you’re they type of person to also argue “ 5 airbags are sometimes better than 6 because the extra airbag MAY hit you in the eye”

          • 

            Euphemistic on 19/11/2020 - 21:45

            -2

            @jackinyourbox: I have lots of theories. You’ll also note that I have used might, probably etc.

            I don’t know the answer, but will always question the validity of something being ‘better’ because it costs more or in this case, is ‘rated’ higher.

            Intrinsically a tyre rated to a higher speed will most likely have a different construction in some way. That different construction will probably have some compromises at lower speeds.

            Of course any compromises may only make a fractional difference but paying extra to be able to use your tyre at an unattainable speed just because it’s ‘better’ doesn’t seem like a good investment.

            I especially like calling out anyone recommending something because it’s ‘better’ without providing reasons or knowing how the buyer may use the product. It just smacks of someone sucked into the marketing hype.

• 

  brad1-8tsi on 19/11/2020 - 10:30

  +2

  Equal or higher is fine. You can even go lower but you have to affix a warning sticker in a prominent place.

  The rating that you can't compromise on is the load rating (its a number like 92, 89, etc).

  As an aside, Ecopia ER300 aren't a particularly grippy tyre (IMO), especially in the wet.

  My pick in that size would be a Michelin Primacy 4 (a bit pricey around $140) or a Continental ComfortContact6 CC6 (around $90).

  • 

    IDontKnowWhyImHere on 19/11/2020 - 13:13

    Thanks for the input and suggestion.

    Good to know that, lower rating also would be fine.

    Ill check for Michelin as well. Thanks again.

    • 

      brad1-8tsi on 19/11/2020 - 14:21

      +1

      Fine but a pain in the bottom. It's a throwback to when V, W & Y were a bit uncommon and expensive and people argued "Why do I need a 240kph tyre when the speed limit is 110kph?" IMO, the higher speed rated tyres are more stable across the tread face and don't balloon as speed increases.

      • 

        IDontKnowWhyImHere on 20/11/2020 - 01:16

        Got it, I agree with ur view.
        Ill go with better rating.