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Thread: Tyre Pressure....

  1. #1
    Regular Member markmcc's Avatar
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    Default Tyre Pressure....

    I have done a search and haven't found anything relevant...

    i have a question.. i have a Vectra SRi and i am going a long distance drive and i want to know what the correct tyre pressure for each tyre is thanks.. i have looked in my handbook but the section where its meant to state that is blank lol ..

    thanks in advance
    mark mcconnell

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    Full Member Leemarksmith's Avatar
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    Vehicle : Vectra

    Trim : SRi (VXR Styling)

    Engine : Z19DTH (Re-mapped)

    Year : 04

    Mileage : 110k

    Default

    I think i've read people do wheel size x 2 + 1/2 psi... then 4 less for rears if cars empty...

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    Full Member neverlandandy's Avatar
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    Vehicle : Insignia Elite Nav

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    Quote Originally Posted by neverlandandy View Post
    Link = Sorry - no matches. Please try some different terms.

    As a general rule rim size x 2

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    Rim size x2 is too basic - for many cars, Vectra-C included, different wheel sizes are offered with different profile tyres to keep the rolling radius the same - the tyre pressures recommended by the manufacturer are generally the same, regardless of rim size.

    x2 may work for 16's - but not for 17's and 18's.

    Sadly I don't have an owner's manual to hand to answer your question.

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    Quote Originally Posted by Ruperts Trooper View Post
    Rim size x2 is too basic - for many cars, Vectra-C included, different wheel sizes are offered with different profile tyres to keep the rolling radius the same - the tyre pressures recommended by the manufacturer are generally the same, regardless of rim size.

    x2 may work for 16's - but not for 17's and 18's.

    Sadly I don't have an owner's manual to hand to answer your question.
    It has always worked fine for my 17's on all 3 of my Vectra's

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    Regular Member yadziyad's Avatar
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    the x2 plus 2 is what i do on my 18s

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    So what's the point of Opel/Vauxhall working it all out for each body variant, each engine variant and each tyre size variant?

    It's just unfortunate that Mark's owners manual has printing errors, ie blanl pages.

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    I got 17 inch SRi alloys and was told by the guy at JustTyres to inflate them to 35psi, which I do.

  10. #10
    Regular Member Dan_BlackSRi's Avatar
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    Vehicle : Vectra SRi

    Trim : XP NAV

    Engine : 1.9 CDTi 150

    Year : 2007

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    I always use rim size x 2 (and maybe add a couple) always have in any car I have had in various wheel sizes from 13" to 19" and never had any problems or uneven tyre wear.

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