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Thread: Instant fuel increase

  1. 10th July 2015, 06:50 PM #1
    Ean Austral Guest

    Instant fuel increase

    Gday All,


    Put some mud tyres on the D3 and the fuel computer went up 2 ltr /100 almost instantly. I expected the economy to suffer but didn't expect the computer to notice it that quickly. I would expect real figures will be worse.


    Certainly know they are on the car that's for sure.


    Cheers Ean
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  2. 10th July 2015, 06:52 PM #2
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    Slunnie
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    Absolutely. i found the same with the D2. Try Simex and it will do it again over the muds!
    Cheers
    Slunnie


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  3. 10th July 2015, 07:00 PM #3
    Ean Austral Guest
    Quote Originally Posted by Slunnie View Post
    Absolutely. i found the same with the D2. Try Simex and it will do it again over the muds!




    Cheers Ean
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  4. 10th July 2015, 07:15 PM #4
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    ~Rich~
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    I can't really say mine changed that much, also you have to factor in what percentage different your tyres are.
    Mine are 6.33% larger so when I refill I take note of the Kms and add 6.33% to be more accurate before calculating ltr/100.
    2014 SDV6 HSE - LLAMS, Tuff Ant Tree Sliders, Tuff Ant 18" rims, Nitto Ridge Grappler tyres 265/65 R18, Custom Lipo4 battery, Custom Drawer storage system https://www.box.com/s/jem0ilac3cner2mexq64
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  5. 10th July 2015, 07:24 PM #5
    Ean Austral Guest
    Quote Originally Posted by ~Rich~ View Post
    I can't really say mine changed that much, also you have to factor in what percentage different your tyres are.
    Mine are 6.33% larger so when I refill I take note of the Kms and add 6.33% to be more accurate before calculating ltr/100.


    Gday Rich,


    Same rolling diameter as the tyres that came off , 265 / 60 / 18 Vs 245 70 17. My computer tells me between 10.8 & 11.2 for as long as I can remember. Its now reading 12.8 & 13.2.


    Cheers Ean
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  6. 10th July 2015, 08:05 PM #6
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    DiscoDB
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    Which tyres did you fit?

    Sort of supports running sports shoes during the week, and putting on the mud boots for the dirty weekends!
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  7. 10th July 2015, 08:11 PM #7
    Ean Austral Guest
    Quote Originally Posted by DiscoDB View Post
    Which tyres did you fit?

    Sort of supports running sports shoes during the week, and putting on the mud boots for the dirty weekends!

    As much as I hate to admit it... Cooper STT. only because they were on the rims that I bought. They will be coming straight off once we get back from our trip.


    Cheers Ean
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  8. 10th July 2015, 08:16 PM #8
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    Eevo
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    extra rolling friction.


    also, where you comparing old tyres with new tyres?
    Current Cars:
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  9. 10th July 2015, 08:22 PM #9
    Ean Austral Guest
    Quote Originally Posted by Eevo View Post
    extra rolling friction.


    also, where you comparing old tyres with new tyres?

    Not really , my 18' road tyres have done about 15,000ks and these tyres have been used but still have about 80% compared to new.


    I expected a difference just didn't expect the computer to notice it so much.


    Cheers Ean
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  10. 10th July 2015, 08:37 PM #10
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    DiscoDB
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    Quote Originally Posted by Ean Austral View Post
    As much as I hate to admit it... Cooper STT. only because they were on the rims that I bought. They will be coming straight off once we get back from our trip.


    Cheers Ean
    It is interesting the difference. Speaking of "hate to admit", I am running 100% street biased cheap Kuhmo 19inch tyres on my D3, cost less than $200 each but very quiet and I am returning 10.2 l/100km (8.8 on the display). Happy with this, but would not take off road.

    Looking to pick up some 17inch rims with better suited off road tyres for the trips away.
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