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Thread: V6 3.0 CRTI Auto Signum tyre load

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    Default V6 3.0 CRTI Auto Signum tyre load

    Hi all, seems there is a lot of confusion out there as to tyre load ratings for the V6 Signum (and Vectra). Mine has 91 rated tyres on the fronts and 95 rated on the rears.

    I need to replace the front 2 and about to press the button for 2 x Goodyear EfficientGrips but want to be sure I am doing the right thing in getting 95's all round. Has anyone got the definitive answer for this?

    On a similar topic the manual says tyre pressures with a load of 4 x people are 38 front and 35 rear. The interesting bit though is the tyre pressure for 'full load' (thought 4 x people is full load) which gives 41 front and 48 rear. This seems really high - so if I take the family plus holiday baggage then the idea is to bump it up to 41/48 for the journey? Does anyone do this (with a deflation in between journey home)?! Would hate to add 4 x new tyres (at close to £700) and to ruin them with wrong pressures!

    Thanks, Mike

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    Regular Member m8internet's Avatar
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    From memory, this is one of the cars that HAS to be on extra-load / XL / reinforced rated tyres
    These should be 95 (215/50R17) or 94 (225/45R17)

    When using XL tyres the tyre pressures have to be higher, hence why they appear to be high values

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    Follow the pressures in the hand book, thats what it is for.

    M8 is right, you need XL rated tyres on an auto 3.0 cdti.
    Now I need a turbo to keep up!

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    Thanks guys, 95 rating it is then. Best price I have seen is for the Goodyears via KwikFit for £130 odd each. Decision is 2 or 4 (they will all need doing soonish)! Painful...

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    Have a look here mate - http://www.camskill.co.uk/products.php?plid=m54b0s16p0

    You would need to get them fitted but its a lot cheaper than you have just put at £130 each.

    Yes, 225/45/17 will fit with no adjustments really needed.
    Now I need a turbo to keep up!

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    Regular Member themarbleman's Avatar
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    Default Tyre Pressures

    I have the 3.0 V6 CDTi

    Tyres 215/50/17 V91.Eagle NCT's

    Fronts are inflated to 41psi
    Rears are inflated to 38 psi

    Perfect wear acroos the whole tyre tread and i get around 19-20k
    out of them..

    Hope this helps...

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    As far as I remember, 3.0 V6 auto should have at least W rated tyres, 91.

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    Regular Member m8internet's Avatar
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    Quote Originally Posted by littlejohn View Post
    As far as I remember, 3.0 V6 auto should have at least W rated tyres, 91.
    The EU conformity, as is the same for all Vectra, is actually only H rated tyres
    Personally, there is no way I would use that
    However, you can run with V rated tyres quite safely, but most people use at least W rated
    I am currently using Y rated tyres, as they are cheaper!
    I have also tested sets of ZR and Z rated, all work as expected

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    Regular Member john_k_sri's Avatar
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    Vehicle : Vectra

    Trim : SRI NAV XP

    Engine : 1.9 CDTI 150

    Year : 2007

    Mileage : 72K

    Default

    Quote Originally Posted by m8internet View Post
    The EU conformity, as is the same for all Vectra, is actually only H rated tyres
    Personally, there is no way I would use that
    However, you can run with V rated tyres quite safely, but most people use at least W rated
    I am currently using Y rated tyres, as they are cheaper!
    I have also tested sets of ZR and Z rated, all work as expected
    I wouldn't use H rated either Maximum speed rating is exceeded by the majority of UK Vectra 'C's. 'W' rating seems to be standard factory-fit, and I have been advised that some insurers would not be happy with 'V' rated tyres, although I did use them on my old 2.0T, as their maximum speed rating is 149mph.

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    Regular Member m8internet's Avatar
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    Quote Originally Posted by john_k_sri View Post
    I have been advised that some insurers would not be happy with 'V' rated tyres
    Pretty tough if they are "not happy", just present the vehicles EU Conformity Certificate
    It clearly states "tyre : 205/55R16 H 89"
    Even with the basic settings from the handbook, the lowest tyre I can find is a 205/55R16 with 91H

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