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  1. #111
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    Quote Originally Posted by Fast Eddie WRC View Post
    Strange tyre issues for M-Sport. I'd think a good pressure would press the studs into the ice more.
    That's not how tyres work, not at all.

    High pressure means the tyre can not "adjust" to the road surface in a malleable manner but rather looses contact to the surface here and there.

    Try it with a bicycle and take a bumpy corner with different tyres.

  2. Likes: archie106 (13th February 2026)
  3. #112
    Senior Member Fast Eddie WRC's Avatar
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    Quote Originally Posted by becher View Post
    That's not how tyres work, not at all.

    High pressure means the tyre can not "adjust" to the road surface in a malleable manner but rather looses contact to the surface here and there.

    Try it with a bicycle and take a bumpy corner with different tyres.
    Spiked ice tyres must be different.

  4. #113
    Senior Member Fast Eddie WRC's Avatar
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    Bertelli
    After 8kms, a delaminated tyre on the straight out of nowhere, I was cruising without pushing...

  5. #114
    Senior Member Fast Eddie WRC's Avatar
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    Sesks is still moving to start SS4.

  6. #115
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    Quote Originally Posted by Fast Eddie WRC View Post
    Spiked ice tyres must be different.
    Not in the way you are thinking. The car and therefore the four tyres are pressed into the ground by gravitational force, if that force is applied to a soft object (low tyre pressure) or hard object (high tyre pressure) doesn't change the force with which the spikes are pressed into the surface. Of course this is a static thought experiment only and dynamically (movement through corners) things are different.

  7. Likes: jcevc (13th February 2026)
  8. #116
    Senior Member Rallyper's Avatar
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    Maybe MSport has faulty gauges?
    "Reis vas pät pat kaar vas kut"
    Tommi Mäkinen, back in the years...

  9. #117
    Senior Member Fast Eddie WRC's Avatar
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    Glad for Sesks he got through.

  10. #118
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    Milner confirmed in the interview that they had low pressure, which worked fine during tests... and now they would 'rethink'...
    Last edited by drive; 13th February 2026 at 10:09.

  11. Likes: Morte66 (13th February 2026)
  12. #119
    Senior Member Fast Eddie WRC's Avatar
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    There is cold-induced contraction which had to be factored in for the tyre pressures.

    Maybe its colder at the rally than at M-Sport's test. Or when testing the tyres were warmer due to more short runs and less waiting before starting the runs.

  13. Likes: Rallyper (13th February 2026)
  14. #120
    Senior Member PLuto's Avatar
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    Sesks retired after regrouping (after SS 4)

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