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Ask my anything about tires, I am a tire engineer
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profdra
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Aug 27 2022, 08:48 PM
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New Member
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 Hi, may I know is it still safe to use tyres like this ? DOT2018 with good tread depth. What is the reason for these cracks? Is it because they are seldom used? Since covid mileage about 6k per annum. This post has been edited by profdra: Aug 27 2022, 08:49 PM
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profdra
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Aug 27 2022, 11:24 PM
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New Member
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QUOTE(zeng @ Aug 27 2022, 09:09 PM) It is safe to continue its service as these hairline cracks are cosmetic and not structural/strength in nature, according to tyre manufacturers. Cracks is related to hardening of rubber tyre compound with oxidation/sunlight as a catalysts. isn't this dry rot which is recommended to replace tyres ?
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profdra
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Aug 29 2022, 01:39 PM
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New Member
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QUOTE(alexei @ Aug 29 2022, 10:19 AM) It's been asked before, see below. ok I've read them. Thanks. The reason I asked the question is because I have 1 tyre with was patched recently due to screw puncture which is leaking. Its about 1cm. Definitely less than 2cm. If it can't be used then I would just change them. Now my question, is 1-2cm hole still patchable? Its runflat Potenza S001.
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profdra
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Aug 29 2022, 01:40 PM
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New Member
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QUOTE(zeng @ Aug 27 2022, 09:09 PM) It is safe to continue its service as these hairline cracks are cosmetic and not structural/strength in nature, according to tyre manufacturers. Cracks is related to hardening of rubber tyre compound with oxidation/sunlight as a catalysts. Thanks
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profdra
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Aug 29 2022, 01:50 PM
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New Member
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QUOTE(zeng @ Aug 29 2022, 01:40 PM) I'm not aware tyre manufacturers recommend tyre replacement on the basis of socalled 'dry rot', whose meaning/definition is not spelled out clearly. In a way, I don't consider the hairline cracks on this 2018 tyre as dry not , as the structural strength of the tyre is not compromised and is intact. Sorry I don't know much about tyres that's why I came here. Its runflat S001 & I asked the car salesman & he said that I should change it & I also asked my regular tyre shop HupSoon in Subang who has been servicing me for more than 10years & he told me better change it. I also asked Hin Leong which I get my tyres from also recommended me to change for long distance driving. I'm a fast driver sometimes up to 180km/hr on long distance. I'm thinking maybe the cracks are due to not being driven often since the pandemic & still usable. So I came here to get some opinions. But now that I have a screw puncture about 1cm patched a month ago leaking, what is your opinion? Thanks. This post has been edited by profdra: Aug 29 2022, 04:51 PM
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