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Thread: tyre pressure 19 snowflakes

  1. #1
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    Default tyre pressure 19 snowflakes

    can any one help me what is the correct tyre pressure for a 1.9 signum with 19 snowflakes front and rear

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    Regular Member blues n twos's Avatar
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    Quote Originally Posted by exvectra View Post
    can any one help me what is the correct tyre pressure for a 1.9 signum with 19 snowflakes front and rear
    As a rule guide just double the rim size.... 38psi or there abouts

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    Regular Member Keithy's Avatar
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    i run my vxr reps at 38psi

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    Full Member Leemarksmith's Avatar
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    I do 40 front, 38 rears...

    Been done to death but everyone says 38, owners book says 40 IIRC...

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    Forum Moderator soulman's Avatar
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    i do 40...40...

    double the wheel size +2

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    Regular Member Keif's Avatar
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    Quote Originally Posted by blues n twos View Post
    As a rule guide just double the rim size.... 38psi or there abouts
    That rule is rubbish.

    Why would you change the PSI of the tyre for different rim size. For a 16" Rim it's recommended by Vauxhall to have the front and rear tyres at 35PSI (Not 32 as that rule would calculate too).

    The weight of the car is the same what ever rims you have on. The PSI in your tyres is "calculated" on the cars weight.

    For my engine in the Signum the correct PSi for the tyres is
    16" = 35/35
    17" = 35/35
    17" = 35/35 (different tyre size)
    18" = 35/35
    19" = ??/??

    Every other engine size has a pressure through the tyre size range that's exactly the same.
    Last edited by Keif; 1st September 2010 at 19:44.

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    Default 19 snowflakes

    cheers guys i think i will try 38 front and rear

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    Regular Member lofty's Avatar
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    Quote Originally Posted by leemarksmith View Post
    I do 40 front, 38 rears...

    Been done to death but everyone says 38, owners book says 40 IIRC...

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    Regular Member sol's Avatar
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    Checked, and the hanbook says 38 Front and 33 Rear unladen

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    Full Member Big Sig's Avatar
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    Quote Originally Posted by Keif View Post
    That rule is rubbish
    That's why it's only a guide!

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