Tyres "perishing"

red_eye

Ultrasonic wrote: »

As far as never putting air in goes, even tyres that are perfectly sealed so that no air ever leaks out still need extra air putting in during winter, as otherwise the pressures will be low due to lower ambient temperatures. If pressure checks haven't shown this the pressure gauge is broken.

air can pass though rubber hence nitrogen with bigger molecules is used in motorsport

red_eye

50Twuncle wrote: »

:cool:

Already posted that. .. 5710

didt see:doh:

50Twuncle

Sorry - I meant 4710

50Twuncle

GolfBravo wrote: »

7000 miles is just below the national average for private cars (8500 miles). Apparently a fifth of all cars on British roads cover only 5000 to 7000 miles.

Are these ContiEcoContact by any chance?

No - the tyres are Premium Contact 2's !!
And I have got a meeting with the dealers on Tuesday to discuss options !

50Twuncle

UPDATE:
New tyres being fitted today - paid for by the dealers who I bought the car from 2 years ago
The problem WAS faulty tyres !!
I got support from Honest John and the CAB, who both agreed that the tyres appeared to be faulty (I sent them the photo) - I then emailed the MD of my dealers branch - who agreed to supply and fit new tyres at no cost to myself.....
Thanks to all for advice on this thread.

goonarmy

Just make sure you check the pressures properly now then.....

Iceweasel

I'm glad you got a good result on this.

You never did post the full DOT code on the sidewalls though - so we could know which factory and in which country these tyres were actually made.

Unusual - but there must have been a whole batch of these supplied to the car manufacturer around that time from production in 47th week of 2010 - would be good to share the info.

50Twuncle

Iceweasel wrote: »

I'm glad you got a good result on this.

You never did post the full DOT code on the sidewalls though - so we could know which factory and in which country these tyres were actually made.

Unusual - but there must have been a whole batch of these supplied to the car manufacturer around that time from production in 47th week of 2010 - would be good to share the info.

Sorry - yes I forgot
Too late now !!

facade

red_eye wrote: »

air can pass though rubber hence nitrogen with bigger molecules is used in motorsport

That isn't the reason.

Most likely the nitrogen is a safe cheap dry inert gas to have knocking around in high pressure cylinders, rather than compressed air which needs driers and a creaky clanky old compressor.

Oxgen molecules are usually said to be about 3% smaller than nitrogen molecules, and over a year, you may see a very very very slight difference in pressure loss over an 80% nitrogen, 20% oxygen (air) tyre vs a 100% nitrogen filled tyre, but certainly not over the duration of a race.

The reason Kwikfit try to sell you nitrogen at a huge price is because some people will actually buy it, then it is extra bubbly at the shareholders meeting

Iceweasel

I just noticed on a puncture repair invoice from ATS Aberdeen in September that they filled my tyre with Nitrogen (without asking) for the princely sum of £1.00

Too late for me to complain now.