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Tyre pressure
Comments
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Are you even hearing yourself?I'm guessing you didn't.
"When your tyres are over-inflated your car will not be able to perform as well as it should. They will not be able to get a good grip on the road and this can have effect not only on the safety of your car but in the performance and mileage you get from your car each day. It will cause the tyres to wear improperly, making them dangerous for you to drive on. Over-inflated tyres may even be more likely to puncture, causing you to get a flat or a blowout. This can be very dangerous if you are travelling at faster speeds"
But you crack on.
How does increasing wear, or worsening grip etc make them dangerous? You are being ridiculous.0 -
The car makers give the correct pressures for a reason. That pressure gives the best tyre performance and wear. Why assume that you know better?
As for saying that less grip isn't necessarily dangerous. . .
Do you really believe that?0 -
The car makers give the correct pressures for a reason. That pressure gives the best tyre performance and wear. Why assume that you know better?
As for saying that less grip isn't necessarily dangerous. . .
Do you really believe that?
Yes, his address is
1, Nonsense Street,
Balderdash,
Cloud Cuckoo Land,
A different Planet.0 -
To be fair, the maker's tyre pressures are only technically correct for the original fitment tyres. Different brands or designs of replacements might give their best performance a few PSI either side of the handbook figures.
As an example, the set on my 5 series at the moment has been kept at the recommended through their life, using a quality gauge, and all 4 have worn slightly more on the shoulders which would suggest under inflation. The difference is only about half a mm in depth between the centre and shoulders over their life span but, if I replace with the same, I'll up the pressure by a couple of PSI all round and they'll be happier like that.
That said, the difference will only be a few PSI, not almost 50% and, without other info like observed wear, the makers' figures are a good trade-off.0 -
Giving less grip isn't necessarily dangerous. That's like saying that because today was more cloudy than yesterday, it must be raining.
No it isn't. That's a completely naff analogy.
If the car has less grip than the manufacturer designed it to have, then it is dangerous.
Try having a conversation with your insurer about this - see what they think.Optimists see a glass half full
Pessimists see a glass half empty
Engineers just see a glass twice the size it needed to be
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It's not ridiculous. Your tyres do not have to match the recommended pressures. Its up to you how you inflate them. Its not going to destroy the car. You're just being drama queens.
Yes of course changing the pressure can affect economy, ride, handling, etc. all I'm saying is that different people have different preferences and you are not required to stick to the recommended pressures.
Oh dear. Tyre pressures are calculated by the manufacturer taking into account the size of the tyre and the weight placed on each axle. This is done to ensure that the maximum amount of tyre tread is in contact with the road whilst maintaining sidewall stability to give better cornering.
When you go above what they say you start to reduce the contact patch of the tyre on the road which affects braking, cornering, steering. When you go below what they say you lose sidewall rigidity which massively affects cornering leading to oversteer and understeer which can be catastrophic at speed.This is a system account and does not represent a real person. To contact the Forum Team email forumteam@moneysavingexpert.com0 -
[quote=[Deleted User];72506079]Oh yes they do. Incorrect inflation is an offence (Construction and Use Regs, section 27). 3 points and a fine.[/QUOTE]
That reg states the tyre is not so inflated as to make it fit for the use to which the motor vehicle or trailer is being put.
Where's the bit that says they must match the recommended pressure?0 -
AndyMc..... wrote: »That reg states the tyre is not so inflated as to make it fit for the use to which the motor vehicle or trailer is being put.
Where's the bit that says they must match the recommended pressure?
What else would you rely on to prove that it was "fit for the use ..." etc?
The reality is that a reasoned informed decision like yours to vary the presssures slightly is never going to cause a problem.
However, our friend above who thinks it doesn't matter at all is deluding himself.0
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