Guessing I have no option but to replace this tyre?





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  1. #1
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    Default Guessing I have no option but to replace this tyre?

    Small bulge on sidewall - only noticed it today. My guess is a hard impact against a rock while on a trail a month ago and deflated to 1.3 bar.

    Prefer to be safe rather than sorry but grateful for any advice.

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  2. #2
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    Default Re: Guessing I have no option but to replace this tyre?

    Yep, a blowout waiting to happen. Keep it as a spare.
    Jakes Louw
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    Default Re: Guessing I have no option but to replace this tyre?

    Change that tyre...at speed that bubble can become a big problem...

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  6. #4
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    Default Re: Guessing I have no option but to replace this tyre?

    Not even as a spare, just get rid of it, your life is worth more than the price of a tyre....

    Imagine your spare has to go on the front tyre while your wife is using the vehicle. Jonas stops with his bakkie to help and he sees no harm in that tyre and fits it.

    Ten km along on a nice wide open road through an easy corner, she is doing 120kph and the tyre lets go. Will she be able to hang on to it and keep the vehicle on the road?
    Last edited by mvcoller; 2020/07/21 at 03:44 PM.
    Malcolm van Coller - retired 2013 but remained in Johannesburg (maybe will look at moving south, Robertson or Wellington type of town, once the wife retires)
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  8. #5
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    Default Re: Guessing I have no option but to replace this tyre?

    If you fit a tube, it will work as a spare.
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    Default Re: Guessing I have no option but to replace this tyre?

    Just get rid of that tyre... Don't gamble... Even if it looks to be ok... Chuck it away... Buble means there's a destortion in the sidewall that's a defect rendering the tyre defective so scrap it...

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  12. #7
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    Default Re: Guessing I have no option but to replace this tyre?

    Quote Originally Posted by Henris View Post
    If you fit a tube, it will work as a spare.
    No Henri - even a bigger blowout waiting to happen. On a tubeless tyre the bead clings tight to the rim with no movement. The tube inside does move and friction between it and the tyre can give you quite a big "pop". Rather not!!
    Gavin Pike

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    Default Re: Guessing I have no option but to replace this tyre?

    My opinion: Change it. A tube in my opinion (and yes I know they used to all have tubes) doesn't make a tyre any safer. On a tubeless tyre a nail, will often seal off the hole. On a tyre with a tube in, you have a huge hole (valve) where the air escapes. That tyre basically has air inbetween the plys on the sidewall. Any debris will only have to penetrate through the thin bubble to cause a blowout. Also an 'impact fracture' as that is called is usually caused by damage to the construction of the tyre (some of the rayon in the plies have been severed)

    My opinion of a spare also differs. Once it is on the vehicle, you don't have another spare if that one fails.

    Disclaimer: This is my advice as a co-owner of a tyre shop. Regards it as good advice or salestalk.
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    Default Re: Guessing I have no option but to replace this tyre?

    NEVER, BUT NEVER fit a tube to a tubeless tyre and rim.

    First issue is the the hole on the rim is not the correct size for a tube's valve (the hole for a tubeless valve is a lot smaller) so the tube's valve will not sit correctly AND THE RUBBER WILL FAIL at the valve.

    Secondly, tyres have small ribs cast into the inside of the casing and these will chafe through the tube. At worst, it will build up heat and cause instant catastrophic tyre failure

    Remember, when a tubeless tyre deflates due to a nail or something small penetrating the rubber, it deflates slowly and the vehicle is controllable.

    Not the case with a tube in a tubeless tyre/rim combination. It deflates a lot faster and because the valve is not correctly sealing in the hole. The valve retracts into the tyre and air loss happens pretty fast after that. That is super dangerous and at that point it is very easy to lose control of the vehicle.

    Sorry Henri, but that is not good advice, I am however not trying to slate you here....
    Last edited by mvcoller; 2020/07/21 at 04:18 PM.
    Malcolm van Coller - retired 2013 but remained in Johannesburg (maybe will look at moving south, Robertson or Wellington type of town, once the wife retires)
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  18. #10
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    Default Re: Guessing I have no option but to replace this tyre?

    In other words - a spare is only a spare until it’s not a spare.
    Gavin Pike

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  20. #11
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    Default Re: Guessing I have no option but to replace this tyre?

    I did a search for you:
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    Malcolm van Coller - retired 2013 but remained in Johannesburg (maybe will look at moving south, Robertson or Wellington type of town, once the wife retires)
    2011 Nissan Pathfinder 2,5 CDi LE Manual (with front Lokka) - My Platkar...
    2008 Nissan Patrol 3.0 TDi GL with front Lokka (Use it mainly for Safari business)
    2003 Bushwakka Shorti (with 160 H/Moon Stargazer RTT and 100 lt water tanks)
    Ex 1999 Nissan Terrano 2.7 TDi
    Ex 2011 Conqueror Supra II
    Ex 1995 GQ Patrol GLX 3 speed Auto
    Ex 1984 Nissan Safari 2.8 Station wagon with 5 speed conversion,
    Ex 1995 Sani 3.0 V6 Exec
    Ex 1994 Venture 2200 with lock diff (Company vehicle).
    Many 4x4s in National Service (Landies, Jeeps, Willys, Bedfords, Unimogs and Buffels)

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  22. #12
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    Default Re: Guessing I have no option but to replace this tyre?

    Eish. Ok. I have done this before, but granted, it was on a spare. Next tyre change it was scrapped in any case.
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    Default Re: Guessing I have no option but to replace this tyre?

    Just had the same on a brand new tyre.

    I scrapped the tyre

    I dont take chances with suspension, steering, brakes and tyres.

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  26. #14
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    Default Re: Guessing I have no option but to replace this tyre?

    In the last year I have lost 5 tyres, 2 with outright sidewall punctures, one with a big hole in the tread - fixed but then started delaminating and 2 with sidewall bubbles.

    Agree with all above it simply is not worth it to try your luck with a tyre like that, suck it up and replace it (and throw it away - no point having a spare you cannot trust)

    With the roads these days tyres simply dont last long enough to wear out
    Last edited by mullerza; 2020/07/21 at 04:56 PM.
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  28. #15
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    Default Re: Guessing I have no option but to replace this tyre?

    As a side note: There is insurance that covers you with tyres like these. Some are even free...
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  30. #16
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    Default Re: Guessing I have no option but to replace this tyre?

    Your thread title says you already know the answer. Here's another vote for replacing it (and not considering it a spare).

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  32. #17
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    Default Re: Guessing I have no option but to replace this tyre?

    Cut through the bulged area of the sidewall and you will see the delamination. Secondly that will prevent some unscrupulous persons from selling the tyre to some other unsuspecting person.
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  34. #18
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    Default Re: Guessing I have no option but to replace this tyre?

    Put it on the left rear, a blow out there is not too serious but it will blow, no doubt. In front is outright dangerous. I tried tubes in 265/75R16 radials a few times, never got to 1000 km before
    the tube is gone so for short distance at low speed as a spare is the only use.

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  36. #19
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    Default Re: Guessing I have no option but to replace this tyre?

    Quote Originally Posted by mvcoller View Post
    NEVER, BUT NEVER fit a tube to a tubeless tyre and rim.

    First issue is the the hole on the rim is not the correct size for a tube's valve (the hole for a tubeless valve is a lot smaller) so the tube's valve will not sit correctly AND THE RUBBER WILL FAIL at the valve.

    Secondly, tyres have small ribs cast into the inside of the casing and these will chafe through the tube. At worst, it will build up heat and cause instant catastrophic tyre failure

    Remember, when a tubeless tyre deflates due to a nail or something small penetrating the rubber, it deflates slowly and the vehicle is controllable.

    Not the case with a tube in a tubeless tyre/rim combination. It deflates a lot faster and because the valve is not correctly sealing in the hole. The valve retracts into the tyre and air loss happens pretty fast after that. That is super dangerous and at that point it is very easy to lose control of the vehicle.

    Sorry Henri, but that is not good advice, I am however not trying to slate you here....
    I 100% agree with this advice. When I first bought my Defender, a friend's advice was to use General SAG tube-type tyres, so I did and had several tube failures, probably because the Wolf wheels were not tube-specific. I eventually switched to tubeless and have not had problems since.

    We travelled in Paraguay a few years ago and it is common for vehicles there to run tubes in tubeless tyres, because the roads are so shocking. Of course, you never get up much speed and every few kms down the road is a "Gommeria" or tyre-repair guy. Usually he is napping on the bench out front in between customers :-)
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  38. #20
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    Default Re: Guessing I have no option but to replace this tyre?

    Quote Originally Posted by mvcoller View Post
    NEVER, BUT NEVER fit a tube to a tubeless tyre and rim.

    ...............

    Secondly, tyres have small ribs cast into the inside of the casing and these will chafe through the tube. At worst, it will build up heat and cause instant catastrophic tyre failure
    agreed

    This happened to me. The previous owner of my One Ten V8 put tubes in the tubeless tyres for some obscure reason.
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