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Thread: different tyre sizes on 19s

  1. #1
    Join Date
    Nov 2012
    Location
    Dulwich Hill
    Posts
    9

    different tyre sizes on 19s

    Hi guys,

    I had read somewhere that someone had confirmed (with an engineer) a different tyre size would work on 19 Phoenix wheels instead of the current stock size of 235/40/19?

    Has anyone read this, as I am unable to find the post/details?

    Thanks

  2. #2
    Join Date
    Apr 2012
    Location
    BIRRONG
    Posts
    167
    Users Country Flag
    Yes. I have 245 40/19s Continental Sports contact 6s on my 206. It is legal for the rim size, according to JAX, confirmed in RTA regs. 245s are a common size to fit hold-ons, fords & a lot of other makes in Australia. Hence they are more readily available, more choice of makers & variants at significantly cheaper price per wheel than 235s.

    There is an old thread in here somewhere in which the math of the difference to 235s was agonized over by the forum professors for a week. In short, when brand new, inflated to 38psi, the tyres will indicate just on 2kms higher at 100kph. That still leaves you 3kms under the real speed limit of 100kph because ADRs mandate manufacturers must adjust speedos to read 5% higher than your real speed. IE: You will still be 3kph below the actual speed limit at 100kph. Of course, as they wear, the difference becomes nothing.

    I've also got a full size spare with 245 fitted. It fits about 12mm high in the wheel well, after trimming the intrusive bit of flat plastic trim across the rear of the wheel well. Purists have kittens about this but with the boot floor in place I'm yet to find anyone, including Skoda mechanics doing services, who even notice a difference. Better than the billy cart wheel Skoda supply as a spare, if you are a regular traveler.

  3. #3
    Join Date
    Jul 2010
    Location
    Canberra, ACT
    Posts
    1,990
    Users Country Flag
    thanks for that @2009fsi.
    tis good to know that 245s r an option to consider. as u pointed out - they are more common here and hence much cheaper thanks to the demand, in comparison on the 235s.
    Superb 162TSI MY17; DSG6; Business Grey; Tech Pack; Comfort Pack

  4. #4
    Join Date
    Nov 2012
    Location
    Dulwich Hill
    Posts
    9
    Thread Starter

    Arrr!! Champion. Thanks for that!

    One question - the inflation values, do you increase the PSI a little more than the inflation guide for the 235s? (tyres/load/front rear psi value)
    If so, how much, or not at all?
    Last edited by yeders; 17-04-2018 at 12:15 AM. Reason: inflation question

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