Tyre condition
Author
Discussion

BOH

Original Poster:

145 posts

235 months

Saturday
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Hi,

I bought a fairly new car sight unseen from a main dealer, and the tyres don’t look so good. What does the panel think?

stevemcs

9,991 posts

117 months

Saturday
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If you zoom out they won’t look as bad. It’s usually a trait of Michelins, what did the garage say ? Have you looked at the date of manufacture?

acricha3

141 posts

230 months

Yesterday (10:18)
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As the previous poster said, zooming in makes it look worse, is that cracking only on the edge or across the whole width of the tyre? Is it localised or around the whole circumference?

Short answer is that looks like surface cracking, a manufacturer will tell you it could be caused by multiple variables but in essence the oils/aromatics have evaporated from the surface layer of the tyre which reduces its flexibility and it tears locally on the surface when under stress, the structure of the tyre will be fine.

Some manufacturers/tyres are worse for it that others, once had a set of "N rated" Bridgestone's fitted to a Porsche that cracked across the whole surface within a year of fitting, answer from Bridgestone was "that's normal" .............

Personally if the tyre isn't exhibiting any other obvious defects, i.e, bulges, abnormal wear, or impacting the driving experience then I'd leave them and replace when you normally would.

paddy1970

1,342 posts

133 months

Yesterday (11:45)
quotequote all
The cracking is not just superficial cosmetic marking in one tiny area; it appears widespread across the tread surface, which usually means the rubber has gone hard and degraded.

Check the DOT/date code on the sidewall as well. If it is old (more than 5 years), that would fit exactly with what the photo shows.

Smint

2,935 posts

59 months

Yesterday (12:13)
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I'd remove them asap.

Pica-Pica

16,134 posts

108 months

Yesterday (16:23)
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acricha3 said:
As the previous poster said, zooming in makes it look worse, is that cracking only on the edge or across the whole width of the tyre? Is it localised or around the whole circumference?

Short answer is that looks like surface cracking, a manufacturer will tell you it could be caused by multiple variables but in essence the oils/aromatics have evaporated from the surface layer of the tyre which reduces its flexibility and it tears locally on the surface when under stress, the structure of the tyre will be fine.

Some manufacturers/tyres are worse for it that others, once had a set of "N rated" Bridgestone's fitted to a Porsche that cracked across the whole surface within a year of fitting, answer from Bridgestone was "that's normal" .............

Personally if the tyre isn't exhibiting any other obvious defects, i.e, bulges, abnormal wear, or impacting the driving experience then I'd leave them and replace when you normally would.
Echo this. But change of over 6 years old.