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Thread: Tyre Cracking - Excessive?

  1. 20th February 2021, 01:06 PM #1
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    Tyre Cracking - Excessive?

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    Good afternoon,
    Tyre fitter bloke says the cracking in these 80,000 km/6 year old Michelin passenger car tyres is normal for the age, and as the tyres still have 4 mm of tread depth they'll be fine for a little while longer ( although best just to use them on the rear). At first I thought "sweet, I'll keep them for a bit longer", but as I look again I still have my doubts. Does anybody have any thoughts whether the cracking is excessive or not? I'm not trying to be stingy, I just wanted to know if the cracking was excessive as I know all tyres crack over time.
    Many thanks,
    Edward 🙂
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  2. 20th February 2021, 01:29 PM #2
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    I don't think I would use them except on a farm trailer!
    John

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  3. 20th February 2021, 01:51 PM #3
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    Tyre Cracking - Excessive?

    Wouldn’t catch me using them - except farm trailer as above.

    Cracked rubber is stuffed, and the next outcome isn’t nice.

    Even on the rear, if it goes it will take out a heap of panel and I’ve seen them take out fuel lines etc on D2s
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  4. 20th February 2021, 02:03 PM #4
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  5. 20th February 2021, 03:55 PM #5
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    I don't mind old tyres, but those ones are done.

    Actually for 6 year old tyres I'm surprised at how bad they are. I've got some Pirelli ATR's for the 4WD which are about 12 years old and have now been pensioned off, but on the surface the rubber still looks perfect.
    Cheers
    Slunnie


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  6. 20th February 2021, 08:33 PM #6
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    Many thanks for your replies! Looks like the gut feeling I had was correct despite the assessment from the tyre fitter.

    Yes Slunnie, i'm surprised how bad they look too! The previous Yokohama Geolanders lasted 11 years before they got too hard (but otherwise looked good). I think I'll give the 'premium' Michelin's a miss from now on (although I can't complain about the mileage!).

    Thanks again,

    Edward 🙂
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  7. 20th February 2021, 09:02 PM #7
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    80,000km, you got good value out of them
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  8. 20th February 2021, 09:10 PM #8
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    I wouldnt waste my time with them, just get rid of them,the risk of one failing is too much for me.
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  9. 21st February 2021, 08:02 AM #9
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    The worst part is the compound is shagged (technical term Tyre Cracking - Excessive?)
    Rubber loses grip through repeated heat cycles and UV exposure.
    The natural oils are leached out, this is what results in the micro cracking and often temper colours in the rubber.
    When they have that temper colour look on the tread they are beyond redemption, the difference in grip in braking, cornering and acceleration is staggering compared to a new set, it really is a safety issue at that point.
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  10. 21st February 2021, 09:13 AM #10
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    Quote Originally Posted by rick130 View Post
    The worst part is the compound is shagged (technical term Tyre Cracking - Excessive?)
    Rubber loses grip through repeated heat cycles and UV exposure.
    The natural oils are leached out, this is what results in the micro cracking and often temper colours in the rubber.
    When they have that temper colour look on the tread they are beyond redemption, the difference in grip in braking, cornering and acceleration is staggering compared to a new set, it really is a safety issue at that point.
    Totally agree. I'm a really big fan of tyres with silca based rubber. They're a generation ahead in performance, wear and I think the rubbers longevity.
    Cheers
    Slunnie


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