Flat tyres - cold weather?
Flat tyres - cold weather?
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Discussion

RedWhiteMonkey

Original Poster:

7,893 posts

198 months

Tuesday 21st December 2010
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Over the last few days with the sub-zero temperatures I've spotted quite a few cars driving along with flat tyres. Has anyone else seen similar? Does the colder temperature reduce the tyre pressure to the point where the tyre seal is compromised?

sunbeam_alpine

7,181 posts

204 months

Tuesday 21st December 2010
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Some people say that reducing tyre pressures in snow helps improve traction.

Never tried it myself (got 4x4 with winter tyres).

subsea99

464 posts

189 months

Tuesday 21st December 2010
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dropping the tyre pressure might get you out of a tight spot in snow but not advised as chance of tyre jumping off rim if too low.
best bet is winter tyres

RedWhiteMonkey

Original Poster:

7,893 posts

198 months

Tuesday 21st December 2010
quotequote all
I mean totally flat not just some air let out to give better grip. How on earth the drivers can't tell they have a flat tyre is baffling, I can only assume they think the noise and handling is due to snow, ice and slush on the road.

Working out the air pressure might be easy for you but I was chucked off A-level physics after three months for being a disruptive element in the classroom. wobble

frosted

3,549 posts

193 months

Tuesday 21st December 2010
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I have done it , tyre came off, a bit of lighter fluid and it was back on the rim


Carrot

7,294 posts

218 months

Tuesday 21st December 2010
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RedWhiteMonkey said:
I mean totally flat not just some air let out to give better grip. How on earth the drivers can't tell they have a flat tyre is baffling, I can only assume they think the noise and handling is due to snow, ice and slush on the road.

Working out the air pressure might be easy for you but I was chucked off A-level physics after three months for being a disruptive element in the classroom. wobble
got to admit, I haven't seen anything like this round Berkshire... confused

TooLateForAName

4,888 posts

200 months

Tuesday 21st December 2010
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Most likely that you've seen a number of people who have bounced off too many kerbs.

HellDiver

5,708 posts

198 months

Tuesday 21st December 2010
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I've had it - there was water under the valve cap, which froze pushing the valve open. Tyre went so flat it fell off the rim.

aeropilot

38,419 posts

243 months

Tuesday 21st December 2010
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RedWhiteMonkey said:
How on earth the drivers can't tell they have a flat tyre is baffling, I can only assume they think the noise and handling is due to snow, ice and slush on the road.
That's what I thought until one of mine 'let go' this time last year in similar snow/ice conditions.
I've been lucky, last time I had a tyre let go, was on one of my RS2000's nearly 30 years ago, and I can remember it was immediatley obvious with the higher profile old type 185/70 x 13 on the back of a rwd car.
However, last year, at 70-80mph, when the 18" 40 series tyre let go on the front of the Saab, I sort of, was aware of something not right (slight drumming noise above stereo) but nothing felt odd/wrong through the steering at all (at first)... and by the time I'd twigged (no more than another 10 secs or so) and noticed the tyre smoke in the door mirror!! at 70mph odd, you've travelled quite a distance on a disintegrating tyre....




aizvara

2,066 posts

183 months

Tuesday 21st December 2010
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When the first cold weather hit us a couple of weeks ago I came back to my car after work, got in without a thought and drove off down a hill. Steering felt odd - as if input had no effect until a threshold had been reached, but I didn't immediately stop. I had thoughts that it was just a weird ice/grip thing, as it was very cold. No weird noises, and no other detectable changes (perhaps as these are very low profile tyres).

Got to a very nearby supermarket, parked up and had a look around, suspecting something with the steering or suspension having gone, but no; driver's side wheel was almost completely flat. Re-inflated and got home.

It was all a bit odd, as I check the pressures fairly frequently. I've since taken the wheels off, checked the tyre and can find nothing wrong with it; its still inflated now, albeit in storage rather than holding the weight of the car.

So, I've been wondering the same as the OP about cold temps. Oh, and although it was obvious to me that something was up, I can imagine that in some cars/with some drivers it would be possible to not notice or ignore the effects for quite a while.

maxxy5

771 posts

180 months

Tuesday 28th December 2010
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I don't know but this is fking fascinating I must say.

H_Kan

4,942 posts

215 months

Tuesday 28th December 2010
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I actually noticed 2 cars that had a flat each in Tesco's carpark on christmas eve, I also found that rather odd and remember commenting on it to my mum.

RadoVR6

1,210 posts

222 months

Tuesday 28th December 2010
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Both the rear tyres on my car have lost a lot of pressure while it has been sat over the cold period. I have had to use one of those plug in compressors to get me enough air in to get to the garage.

This had happened twice as i used it a few weeks ago and topped them up then.