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NCT fail for stretched tyres?

  • 07-09-2017 5:44pm
    #1
    Matt Simis
    Registered Users, Registered Users 2 Posts: 8,718 ✭✭✭


    I failed on bushings and headline alignment too, which was fine, but I was a bit surprised to learn my 9.5" rim with 255 width tyres on it is deemed "unfit for purpose" by the NCT. From reading online this seems discretionary to the tester's whims. I have good tyres on it, they don't rub, everything is fine and I hadn't even considered these stretched. I've done proper stretched before, but this is a stock tyre size on a 9.5" wheel FFS! BMW supply the 19" wheels in 10" rear format!

    Anyone experience this? Should I just put it in for a retest and chance them as is? I don't want to put wider tyres on it as they might then rub the arches and also they have to be within 3% of the front tyre diameter lest traction control go haywire, not that the NCT seems to care.


    Car is a 2006 335d.

    Kj7nzai.jpg


Comments

  • #2
    vicwatson
    Registered Users, Registered Users 2 Posts: 28,404 ✭✭✭✭vicwatson


    Traction control on? Always?


  • #3
    mikeecho
    Registered Users, Registered Users 2 Posts: 5,323 ✭✭✭mikeecho


    Put some second hand plastic ditch finders on for the test.
    And swap back after


  • #4
    selectamatic
    Registered Users, Registered Users 2 Posts: 4,104 ✭✭✭selectamatic


    4 16" Steelies with the cheapest Chinese tyres you can find is the standard protocol for passing the test if you're having issues with exotic wheel and tyre combinations.


  • #5
    Toyotafanboi
    Registered Users, Registered Users 2 Posts: 12,917 ✭✭✭✭Toyotafanboi


    I think that photo is kind to the stretch.

    The wheels on the missus Golf are 8.5 and have 225s on them, would a 245 not be better suited to a 9.5?


  • #6
    rex-x
    Registered Users, Registered Users 2 Posts: 1,893 ✭✭✭rex-x


    Toyotafanboi wrote: »
    I think that photo is kind to the stretch.

    The wheels on the missus Golf are 8.5 and have 225s on them, would a 245 not be better suited to a 9.5?

    His are 255 not 225


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  • #7
    Tigger
    Closed Accounts Posts: 16,705 ✭✭✭✭Tigger


    rex-x wrote: »
    His are 255 not 225

    I'm confused alright 9.5 is 241 so 245?is the norm and 255 should look bulgy notvstreched
    Are those bigger rims ?


  • #8
    Toyotafanboi
    Registered Users, Registered Users 2 Posts: 12,917 ✭✭✭✭Toyotafanboi


    rex-x wrote: »
    His are 255 not 225

    Misread that :o

    In any event, I'd try for a retest having done nothing. They aren't grotesquely stretched.


  • #9
    Alanstrainor
    Registered Users, Registered Users 2 Posts: 23,157 ✭✭✭✭Alanstrainor


    I have a set of 4 mv2 alloys with ****e but legal tires in the folks gaff. You can have a lend if you like!


  • #10
    Matt Simis
    Registered Users, Registered Users 2 Posts: 8,718 ✭✭✭Matt Simis


    vicwatson wrote: »
    Traction control on? Always?

    If the front wheels and rear speeds are spinning at above 3% difference in RPM most cars go a bit nuts as they think you are spinning out.


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