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Time to check your tyre pressures


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#1 Monks

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Posted 28 November 2010 - 06:37 PM

People please check your tyre pressures if you have not done so recently. This recent cold snap will have seen your pressure drop considerably as the air in your tyre will contract. You really need to check your tyre pressures more often in the winter months. The shorter days, and less warming sunlight and colder temps will mean your tyre pressure can flucuate alot.

As a very rough guide for every 10 degrees F change your tyres will fluctuate around 1psi. What with the difference between summer and winter temps if you havent checked your pressures recently do so asap. I did my mums merc today which last had them check by my dad in August :( they where 5psi down all round B)

It got me thinking there must alot of people out there who dont know its even more important to check tyre pressure during colder snaps altho they should be checked on a regular basis. Guys sorry if this is like sucking eggs for some of you but its important especially at this time of the year.

Be safe out there people
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#2 ROAD DETECTIVE

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Posted 28 November 2010 - 06:56 PM

Monks- Thats what I call really good advice. In my job I find that most experienced drivers I train have no idea of the importance of keeping tyres in good legal safe condition and pressures are an important part of this. All that car technology going through 4 tyres that usually have not been looked at for months.

#3 GA54 BLS

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Posted 28 November 2010 - 07:42 PM

Get your Tyres filled with nitrogen. Temp change doesn't effect it's pressure. Got all 4 Tyres done for six quid yesterday when my springs were done.
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#4 Monks

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Posted 28 November 2010 - 07:58 PM

Get your Tyres filled with nitrogen. Temp change doesn't effect it's pressure. Got all 4 Tyres done for six quid yesterday when my springs were done.


Sorry Gaz but like many youve been duped into stumping up another £6 as oxygen and nitrogen and normal air we breath all respond in the same way to temp changes as the tyre heats up and cools down: they all have the same rate of pressure change for an equal amount of temperature change.

My local depot was advertising this service with the following

"Up to 25% additional tyre life"
"Up to 5% better fuel economy"
"Improved handling & roadholding"

All that for £1.80 a tyre, it makes my blood boil when they can take advantage of people who dont know any better.
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#5 mcexocet

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Posted 28 November 2010 - 08:26 PM

People please check your tyre pressures if you have not done so recently. This recent cold snap will have seen your pressure drop considerably as the air in your tyre will contract. You really need to check your tyre pressures more often in the winter months. The shorter days, and less warming sunlight and colder temps will mean your tyre pressure can flucuate alot.

As a very rough guide for every 10 degrees F change your tyres will fluctuate around 1psi. What with the difference between summer and winter temps if you havent checked your pressures recently do so asap. I did my mums merc today which last had them check by my dad in August :( they where 5psi down all round B)

It got me thinking there must alot of people out there who dont know its even more important to check tyre pressure during colder snaps altho they should be checked on a regular basis. Guys sorry if this is like sucking eggs for some of you but its important especially at this time of the year.

Be safe out there people




Very good point to raise and more importantly in this weather allow greater breaking distance bewtween yourself and the car in front...you never know when you might hit some black ice. Drive safely

#6 Dan Robinson

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Posted 28 November 2010 - 08:42 PM

The air we breathe is 78 % nitrogen anyway...
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#7 Monks

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Posted 28 November 2010 - 08:47 PM

The air we breathe is 78 % nitrogen anyway...


Sure is mate and only the F1 / track stuff is true 99% pure anyhow B)

#8 Dan Robinson

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Posted 20 February 2011 - 09:03 PM

Checked mine yesterday after an unforgivable lapse of time and the fronts were at 29psi :o. Pumped them up to 36 and went for a blast and the difference was biblical!

Handling, braking, feel all better. Even a mystery judder was improved although i am sure some weights have come adrift.

Edited by Dan Robinson, 20 February 2011 - 09:09 PM.

<!-- isHtml:1 --><!-- isHtml:1 --><p class='bbc_center'>06 (facelift) Tourer EX Graphite w/ Pentas, Stage 1 Remap by <a class='bbc_url' href='http://www.premiertuning.com/'>Premier Tuning</a>. Nice. With a genuine fake real spoiler. Factory fit. Probably the best spoiler ever. A-Spec suspension - makes the world a better place.</p><p class='bbc_center'><br /><img src='http://lh5.ggpht.com...8 - shopped.jpg' alt='Posted Image' class='bbc_img' /><br />It's a constant race between making things idiot-proof, and the universe making better idiots.<br /><br /><span style='font-size: 10px;'><a class='bbc_url' href='http://typeaccord.co.uk/forum/topic/4073-ta-shirts/page__st__160'><span style='color: #FF0000'>Get your TA Shirts here. While stocks last.</span></a></span></p>

#9 Monks

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Posted 20 February 2011 - 09:04 PM

Well done Dan and thats in the milder weather imagine what it would have been during the colder snap :o

#10 steve65

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Posted 25 February 2011 - 09:47 PM

Funny, I've just done mine today. First time I've had a chance since I've bought it. I'm a regular tyre pressure checker anyway as I ride a motorcycle and it's even more important to keep an eye on them as incorrectly inflated bike Tyres can make for particularly messy results. Looks like the previous owner didn't keep an eye on that sort of thing as all four were at 25psi. That would explain the pull to the right and the dreadful understeer then.

#11 Dan Robinson

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Posted 25 February 2011 - 10:04 PM

Blimey. I have my tourer's 17"ers at 36 all round.
<!-- isHtml:1 --><!-- isHtml:1 --><p class='bbc_center'>06 (facelift) Tourer EX Graphite w/ Pentas, Stage 1 Remap by <a class='bbc_url' href='http://www.premiertuning.com/'>Premier Tuning</a>. Nice. With a genuine fake real spoiler. Factory fit. Probably the best spoiler ever. A-Spec suspension - makes the world a better place.</p><p class='bbc_center'><br /><img src='http://lh5.ggpht.com...8 - shopped.jpg' alt='Posted Image' class='bbc_img' /><br />It's a constant race between making things idiot-proof, and the universe making better idiots.<br /><br /><span style='font-size: 10px;'><a class='bbc_url' href='http://typeaccord.co.uk/forum/topic/4073-ta-shirts/page__st__160'><span style='color: #FF0000'>Get your TA Shirts here. While stocks last.</span></a></span></p>

#12 jammy_rex

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Posted 01 March 2011 - 01:23 AM

33 front and 32 rear for my 17s, but one had gone down to 22... The reason being I've found a sodding nail in it! quite central though so I'm hoping it can be repaired!
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#13 Johnburnt

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Posted 01 March 2011 - 05:58 PM

The reason they use nitrogen is because it does not contain water which will affect the balance of the wheel
So nitrogen is used it's nothing do do with it's expansion capibilitys the water also is bad for the heat displacement and it's not pure they(f1 teams) use different blends and they keep it secret from each other.

#14 brett

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Posted 01 March 2011 - 06:16 PM

Nothing wrong with good old air its 78% nitrogen anyway

http://www.engineeri...tion-d_212.html
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#15 Monks

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Posted 01 March 2011 - 06:21 PM

Nothing wrong with good old air its 78% nitrogen anyway

http://www.engineeri...tion-d_212.html


Exactly Brett, its all a big tyre fitter con that

#16 brett

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Posted 01 March 2011 - 06:30 PM

Exactly Brett, its all a big tyre fitter con that

And they charge about £2.00 a wheel :lol:
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#17 Dan Robinson

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Posted 01 March 2011 - 07:20 PM

Courtesy of the AA - sums it up nicely I think:

Purified nitrogen has been used to inflate tyres on aircraft and racing cars for many years, but now some tyre specialists are offering nitrogen inflation for ordinary car and van tyres.

The advantages of using nitrogen in specialist applications are clear
Planes fly at heights where temperatures may be as low as -40C. Any moisture in the tyres can freeze causing vibration and balance problems when landing. Pure nitrogen is dry so eliminates this problem (as would using dried compressed air)
In motor sport the smallest fraction of a second can make the difference between winning and losing. Filling with nitrogen can reduce tyre pressure variation caused by changes in tyre temperature.

For passenger car applications the main claims seem to be
Reduced corrosion – because unlike air there's no moisture in pure nitrogen
Slower rate of pressure loss – because nitrogen molecules are larger than oxygen molecules (which make up 21% of compressed air)

Leakage can occur through the tyre's inner liner but can also occur through the valve, punctures, or failure of the seal between tyre and wheel rim. Pure nitrogen might leak more slowly through the liner, but regular checks of tyre condition and pressures will still be essential.

Corrosion of the tyre through use of normal compressed air alone is most unlikely because only the outer tread band of a car tyre contains steel – the amount of moisture reaching it from the inside is minimal.

Changing to nitrogen involves removing all the air which is already in the tyres and then re-inflating them with purified compressed nitrogen. There will be a one-off charge per tyre but once filled with nitrogen any future top-ups would also have to be with nitrogen if any advantages are to be maintained.

Overall, while accepting the possibility of purified nitrogen being of benefit in certain applications, we don't think that the cost and possible inconvenience are justified for normal passenger car use.


<!-- isHtml:1 --><!-- isHtml:1 --><p class='bbc_center'>06 (facelift) Tourer EX Graphite w/ Pentas, Stage 1 Remap by <a class='bbc_url' href='http://www.premiertuning.com/'>Premier Tuning</a>. Nice. With a genuine fake real spoiler. Factory fit. Probably the best spoiler ever. A-Spec suspension - makes the world a better place.</p><p class='bbc_center'><br /><img src='http://lh5.ggpht.com...8 - shopped.jpg' alt='Posted Image' class='bbc_img' /><br />It's a constant race between making things idiot-proof, and the universe making better idiots.<br /><br /><span style='font-size: 10px;'><a class='bbc_url' href='http://typeaccord.co.uk/forum/topic/4073-ta-shirts/page__st__160'><span style='color: #FF0000'>Get your TA Shirts here. While stocks last.</span></a></span></p>

#18 Johnburnt

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Posted 03 March 2011 - 10:44 AM

Yep thats spot on however I do like to put dryish air in my tyres so I stay away from fuel stations and use my compressor which has water traps and I bleed then tank every couple of month or so or when ever I paint
Nitrogen isn't much use on road cars especially with the roads we have to deal with
It's like my pal spending thousands on a mountain bike making it gramms lighter (I understand it on revolving parts) then he will have two bottles of water on his bike .
That's part of the reason I am not going to drop and stiffen the accord too much as I am sick of avoiding pot holes and slowing to 5/10 mph over speed bumps

#19 Big-Wayne

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Posted 10 April 2011 - 10:35 PM

Going slightly off topic here, but a few years ago my watch (I'm a fire fighter) had a visit from the Devon & Cornwall Police accident investigator who gave us a very interesting lecture on how they carry out investigations on serious RTCs (Road Traffic Collisions). He used three RTCs as examples and two of them I attended. One in particular stuck out in my mind as it was a pretty tough shout although thankfully non-fatal.
We attended a minibus on it's roof on the M5 carrying 12 females on their way back from a hen night in Newquay two trapped in the vehicle and the rest with multiple fractures etc. The upshot of the RTC was that a Peugot 205 had veered across the path of the minibus causing it to swerve out of control. The AI bought the tyre from the Pug in to show us and it had a big hole in it from a blow out, his findings were that a puncture repair on the tyre had sucked water into the steel radial causing a weakness in the tyre.
I've never had a tyre repaired since and if I were to do so I would probably keep it as a spare and put a new one on.
Food for thought though!

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Edited by Big-Wayne, 10 April 2011 - 10:36 PM.


#20 Dan Robinson

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Posted 10 April 2011 - 10:43 PM

Very interesting - and I have to say - I never have had or will have a tyre repaired.

Just don't trust it to take the strain of nearly two tonnes pushing down on it at high speed - especially when I am making the most of my suspension.

I have had the tread part of my van tyre completely come off the tyre wall at 8-mph on a motorway once. The feeling of watching your own tyre over take you is rather surreal.

Thank god they were reinforced walls otherwise it could have been nasty. I think they were Continental tyres, but surely a one off.
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