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Thread: Tyre pressure question (sorry guys)

  1. #1
    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

    Trim : LE/VXR

    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

    Red face Tyre pressure question (sorry guys)

    What tyre pressures should I be running 235/40/18s on a 2.2dti manual. Not sure if there is an exact figure but tried and tested sugestions will be gratefully accepted

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    Admin & Merchandise Manager bigmac's Avatar
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    Vehicle : insignia

    Trim : irmscher

    Engine : 2.0 cdti

    Year : 2009

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    I have 36 all round mate

    Irmscher Insignia CDTI 130

    MOD'S...Irmscher front spoiler, Irmscher mats, Irmscher door pins, Irmscher rear spoiler, Irmscher grille, Irmscher skirt & exhausts,Irmscher Roof spoiler MOD'S TO COME..Side skirts,Wheels

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    Regular Member glenboy's Avatar
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    I run 36 psi on my 225/40/18's............

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    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

    Trim : LE/VXR

    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

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    Cheers guys i'm on 35 just now so i'll pump them up

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    Im up at 40 on my V6cdti after the original 225/40/18 's castallated and scrubbed the outers off!

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    holy cow, 36's and 40's all round?

    I drive a 1.8i petrol, 2003 (53 reg) vectra C ...

    and my tyre pressures are at 28 front, 32 rear. - which is what my manual told me, or at full load i'm supposed to run 32's all round.

    why do you guys run 36 and 40? I'm curious as to the reasoning behind it.. does that mean my pressure's are too low!?

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    Regular Member Penfold101's Avatar
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    I do it because I have 3 litres of diesel to hold up at the front - the manual gives the required pressures...

  8. #8
    Full Member Big Sig's Avatar
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    Quote Originally Posted by Drazek View Post
    holy cow, 36's and 40's all round?

    I drive a 1.8i petrol, 2003 (53 reg) vectra C ...

    and my tyre pressures are at 28 front, 32 rear. - which is what my manual told me, or at full load i'm supposed to run 32's all round.

    why do you guys run 36 and 40? I'm curious as to the reasoning behind it.. does that mean my pressure's are too low!?
    Its actually supposed to be 220Kpa all round or 230kpa up front and 290kpa at the rear when loaded.

    This translates to 32psi all round and 33psi up front and 42psi at the rear when fully loaded.

    Figures from TIS

  9. #9
    Regular Member Marcosuk's Avatar
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    U should try about 70psi all round & watch ur mpg rise

  10. #10
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    lmao, 70psi all round... watch your tires pop more like!

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