18 plate Leon FR 1.8 Tsi.
I have had the following advisory from a recent MOT test For all 4 tyres
“Tyres slightly damaged/ cracking or perishing”
Tyres are Bridgestone Tuaranza 225/45 R17 dated 0723 fitted February 2023.
Granted they are 2 years old but have only covered 13,000 miles and currently tread depth is 5.0/5.5 mm front and 6.0/6.5mm rear.
So there is some life left in them. I never run tyres down to the legal limits.
As an ex Motorsport competitor I replace tyres when the feedback and feel of lack of grip becomes apparent regardless of tread depth.
I raised a complaint with Bridgestone and received the following response.
How would other members feel about this?
There is sufficient damage to warrant an advisory from the official MOT inspection.
I wonder what my insurer would think about this in the event of a claim?
Comments welcomed.
From Bridgestone:-
“The cracking evident on the tyres is due to oxidation of the rubber, which causes the rubber to become more brittle, and crack under stress. Ageing of the rubber is accelerated by exposure to certain factors, such as sunlight, sea air, contaminants (including tyre blacking agents), and ozone (which can come from motor exhaust and electrical motors). The effects of ageing are particularly noted when the vehicle is parked up for periods Oulf of time, and the anti-ageing oils and agents on the surface of the tyre are broken down or washed off, and not replenished from within the tyre by the tyre’s movement. Also, oxidation of the tyre is possible when the rubber is under stress, the more stress the tyre is under, the more likely the tyre will suffer from oxidation. Tyres which are run with insufficient pressure are more likely to crack in this manner.
Tyre manufacturers add ingredients to rubber compounds to slow down the rate at which tyres age. However, conditions of storage and use (including tyre maintenance) have a larger influence over the tyre aging process. Tyres that are used infrequently (low mileage) and/or in coastal areas will age more quickly. Low usage prevents the anti-ageing oils from migrating to the tread surface (oil replenishment at the tread surface is diminished), so causing the tyres to display surface rubber cracking.
From the images you have provided, I can confirm that in their current state we would recommend that you continue using the tyres, as the surface rubber cracking is not compromising tyre safety or the tyres dynamic characteristics. The presence of perishing is not unusual of any tyre over 12 months old since the date of manufacture, the presence of perishing alone does not indicate that the tyre needs to be replaced.”
Apart from the visual appearance of surface cracking the tyres are safe for continued use. However, as with all tyres, you should check tyres regularly for any signs of significant damage or deterioration.”
I have had the following advisory from a recent MOT test For all 4 tyres
“Tyres slightly damaged/ cracking or perishing”
Tyres are Bridgestone Tuaranza 225/45 R17 dated 0723 fitted February 2023.
Granted they are 2 years old but have only covered 13,000 miles and currently tread depth is 5.0/5.5 mm front and 6.0/6.5mm rear.
So there is some life left in them. I never run tyres down to the legal limits.
As an ex Motorsport competitor I replace tyres when the feedback and feel of lack of grip becomes apparent regardless of tread depth.
I raised a complaint with Bridgestone and received the following response.
How would other members feel about this?
There is sufficient damage to warrant an advisory from the official MOT inspection.
I wonder what my insurer would think about this in the event of a claim?
Comments welcomed.
From Bridgestone:-
“The cracking evident on the tyres is due to oxidation of the rubber, which causes the rubber to become more brittle, and crack under stress. Ageing of the rubber is accelerated by exposure to certain factors, such as sunlight, sea air, contaminants (including tyre blacking agents), and ozone (which can come from motor exhaust and electrical motors). The effects of ageing are particularly noted when the vehicle is parked up for periods Oulf of time, and the anti-ageing oils and agents on the surface of the tyre are broken down or washed off, and not replenished from within the tyre by the tyre’s movement. Also, oxidation of the tyre is possible when the rubber is under stress, the more stress the tyre is under, the more likely the tyre will suffer from oxidation. Tyres which are run with insufficient pressure are more likely to crack in this manner.
Tyre manufacturers add ingredients to rubber compounds to slow down the rate at which tyres age. However, conditions of storage and use (including tyre maintenance) have a larger influence over the tyre aging process. Tyres that are used infrequently (low mileage) and/or in coastal areas will age more quickly. Low usage prevents the anti-ageing oils from migrating to the tread surface (oil replenishment at the tread surface is diminished), so causing the tyres to display surface rubber cracking.
From the images you have provided, I can confirm that in their current state we would recommend that you continue using the tyres, as the surface rubber cracking is not compromising tyre safety or the tyres dynamic characteristics. The presence of perishing is not unusual of any tyre over 12 months old since the date of manufacture, the presence of perishing alone does not indicate that the tyre needs to be replaced.”
Apart from the visual appearance of surface cracking the tyres are safe for continued use. However, as with all tyres, you should check tyres regularly for any signs of significant damage or deterioration.”
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