Tyre (Tire) Pressure

[Kwasaki]

6 minutes ago, wgdanson said:

In UK the law says you must have your tyres (English) at the Manufacturer's Recommended Pressure.

It's tyre depth that's law in UK not PSI, PSI is only recommended.

 

[HAKAPALITA]

13 minutes ago, Kwasaki said:

It's tyre depth that's law in UK not PSI, PSI is only recommended.

 

Same everywhere.. Its the Bar bit i dont like, it reminds me of more important issues. With a little more effort some of you could make it a difficult issue to solve..

[wgdanson]

18 minutes ago, Kwasaki said:

It's tyre depth that's law in UK not PSI, PSI is only recommended.

 

From the AA website  (for Hakapalita that is The Automoble Association and not the place he needs to go !   LOL)

 

Whatever you’re driving, the condition of your tyres is critical for your safety as they’re the only part of your vehicle in contact with the road.

Because your tyres play such a vital role, there are some very important and specific legal requirements relating to their condition and maintenance:

• Tyre must be fit for purpose and be free from any defects which might damage the road or endanger any person.
• Tyres must be correctly inflated to the vehicle manufacturer's and the tyre manufacturer's recommended pressure.

Edited February 2, 2019 by wgdanson

[bluesofa]

1 hour ago, NanLaew said:

Forget about tire pressures. Pondering why the locals do anything remotely contrarian will only serve to increase your blood pressure.

I don't think blood pressure tends to be measured in psi, not sure about the units for peer pressure though.

[Kwasaki]

16 hours ago, Anythingleft? said:

Have you thought of trying nitrogen, I hear it's all the rage nowadays.....

It works for those who like it but there are not many convenient nitrogen places about like air in petrol stations.

Air PSI has to be checked regularly whereas a properly fitted tyre on a rim filled with nitrogen doesn't.

The average motorist has difficulty in understanding the logic behind its use.

I'm happy using it and got the new truck changed to nitro because I service the truck at my local Cockpit as HAKAPALITA would know I like mention. ????

 @HAKAPALITA

[Kwasaki]

13 minutes ago, wgdanson said:

From the AA website  (for Hakapalita that is The Automoble Association and not the place he needs to go !   LOL)

 

Whatever you’re driving, the condition of your tyres is critical for your safety as they’re the only part of your vehicle in contact with the road.

Because your tyres play such a vital role, there are some very important and specific legal requirements relating to their condition and maintenance:

• Tyre must be fit for purpose and be free from any defects which might damage the road or endanger any person.
• Tyres must be correctly inflated to the vehicle manufacturer's and the tyre manufacturer's recommended pressure.

I would still say the law on tyres is depth, psi is not law it's a requirement.

You can get a IDP from the AA too for Thailand using your photocard UK driving license. ????

[HAKAPALITA]

11 minutes ago, Kwasaki said:

It works for those who like it but there are not many convenient nitrogen places about like air in petrol stations.

Air PSI has to be checked regularly whereas a properly fitted tyre on a rim filled with nitrogen doesn't.

The average motorist has difficulty in understanding the logic behind its use.

I'm happy using it and got the new truck changed to nitro because I service the truck at my local Cockpit as HAKAPALITA would know I like mention. ????

 @HAKAPALITA

There was a Girl back home called that.!.

[wgdanson]

11 minutes ago, Kwasaki said:

I would still say the law on tyres is depth, psi is not law it's a requirement.

You can get a IDP from the AA too for Thailand using your photocard UK driving license. ????

Whats the IDP got to do with the Law on tyre pressures. Yes, tread depth of 1.66mm is Law as is the requirement to have them at the correct pressure.

 

• Tyres must be correctly inflated to the vehicle manufacturer's and the tyre manufacturer's recommended pressure.

[wgdanson]

10 minutes ago, HAKAPALITA said:

The average motorist has difficulty in understanding the logic behind its use.

Then please explain to this 'average motorist' the logic behind it.

[JAG]

I was yesterday the witness (rather too close for comfort) of an accident which was, I suspect, at least partly caused by the local habit of greatly overinflating car tyres. As I bimbled sedately in my old pick up into Chiang Rai (Dad's Taxi, on its way to transport Little Miss JAG from School to singing lessons - she is going to be a superstar you know) a brand new Fortuna came around the corner (a gentle bend) rather fast and rather wide. He must have braked hard and turned sharply, to steer back to his side of the road. The back slid out, and he went straight off the road, at a right angle, into a wall. The front end and bonnet were smashed in by the impact. I stopped, and with a couple of Thais must have opened the driver's door within about 30 seconds of the impact. He was sitting there, in shock, uninjured and holding his mobile phone in his right hand!

 

I wouldn't mind a bet, looking at how the Fortuna had reacted to his steering and braking, that his tyres were greatly overinflated.

 

Interestingly, despite the extensive damage to the front end, his airbags didn't deploy!

Edited February 2, 2019 by JAG

[HAKAPALITA]

33 minutes ago, wgdanson said:

Then please explain to this 'average motorist' the logic behind it.

No.! Ask Kwakers hes good at English. I ran at 15psi winter months, with pump for good days in Trunk.

[tifino]

for the over-inflaters... it would have worked out better for all

- if they'd over-inflated to pressure - whilst Hot!!

 

 

 

[jvs]

47 minutes ago, wgdanson said:

Then please explain to this 'average motorist' the logic behind it.

Using nnitrogen is useful for race cars but a total wast of money for the average Joe,but if it makes you feel good go for it!!

[transam]

1 minute ago, jvs said:

Using nnitrogen is useful for race cars but a total wast of money for the average Joe,but if it makes you feel good go for it!!

If it is free, my garage it is, then bung it in....????

[jvs]

1 minute ago, transam said:

If it is free, my garage it is, then bung it in....????

Then you are lucky Sir Trans,most places make you pay for nitrogen.

[transam]

1 minute ago, jvs said:

Then you are lucky Sir Trans,most places make you pay for nitrogen.

They know my .......is legendary.....????

[HAKAPALITA]

19 minutes ago, jvs said:

Then you are lucky Sir Trans,most places make you pay for nitrogen.

Total nonsense.!

[Kwasaki]

1 hour ago, wgdanson said:

Whats the IDP got to do with the Law on tyre pressures. Yes, tread depth of 1.66mm is Law as is the requirement to have them at the correct pressure.

 

• Tyres must be correctly inflated to the vehicle manufacturer's and the tyre manufacturer's recommended pressure.

An IDP with a UK driving license is useful sometimes in Thailand. 

Going on about UK tyre laws isn't.

As for UK you have legal requirement mixed up with actual law.

[Bredbury Blue]

15 hours ago, jadatis said:

This " pigheaded Dutch selfdeclared tire/tyre- pressure-specialist" registered to give an answer.

 

The 33/30 psi is most likely the pressure the carmaker calculated for max allowed axle- loads and for max technical car speed. 

So is alrrady eith a comfortable reserve for normal driving= only driver plus eventual copilot and for normal speed of below 140km/ 87m/h. 

Why most garages fill up to 40 psi is for simplicity , one pressure for every car so no thinking needed.

This 40 psi then will give low comfort and gripp, but better fuelsaving. 

Comfort is subjective, that your kidneys walk you are used to and think thats normal comfort.

On highway with asphalt, bumping wont be that much, so if you have no problems, keep it on 40 psi .

Steering can be a bit nervous at that pressure.

 

My tyrepressure-story becan on Dutch camperforum, when I got hold of the official formula and system from standards manual 2007 of ETRTO , and I went running with it.  Got much wiser in time about it , by googling and nagging people who knew more about it.

 

Thank you for taking the time to answer all my questions and to everybody  else  who offered an opinion.

[wgdanson]

21 minutes ago, Kwasaki said:

An IDP with a UK driving license is useful sometimes in Thailand. 

Going on about UK tyre laws isn't.

As for UK you have legal requirement mixed up with actual law.

And so does the AA then.

[Lacessit]

8 hours ago, wgdanson said:

Here's a thought. In UK the law says you must have your tyres (English) at the Manufacturer's Recommended Pressure. You can get fined or your insurance could refuse to pay out in the event of an accident proved to be caused by incorrect tyre pressure.

What about cars which, on the plate, say for example Rear pressure 30 psi empty, 35 psi loaded. Does that mean that before you take Granny and Grandad to the train station you must put anoth 5 psi in your tyres, and let them down again after they get out?

You should know insurance companies have departments dedicated to finding reasons to weasel out of claims. That's why they have those tall buildings in most capital cities.

Tyres are quite capable of functioning safely on most vehicles in any pressure between 20 and 40 psi. The only exception to that, in my experience, was the Hillman Imp, which could convert from massive oversteer to terminal understeer within a few psi.

[wgdanson]

15 minutes ago, Lacessit said:

You should know insurance companies have departments dedicated to finding reasons to weasel out of claims. That's why they have those tall buildings in most capital cities.

Tyres are quite capable of functioning safely on most vehicles in any pressure between 20 and 40 psi. The only exception to that, in my experience, was the Hillman Imp, which could convert from massive oversteer to terminal understeer within a few psi.

Hillman Imp....you're showing your age. But this is what I learned to drive in.

And actually had my first shag in !

Edited February 2, 2019 by wgdanson

[wgdanson]

6 hours ago, Bredbury Blue said:

Thank you for taking the time to answer all my questions and to everybody  else  who offered an opinion.

There was an ARSENAL of replies !

[Lacessit]

20 minutes ago, wgdanson said:

Hillman Imp....you're showing your age. But this is what I learned to drive in.

And actually had my first shag in !

Vauxhalls were upmarket in Oz. My first shag was in an FX Holden.

[wgdanson]

14 minutes ago, Lacessit said:

Vauxhalls were upmarket in Oz. My first shag was in an FX Holden.

Was it stick shift or automatic. LOL

[owl sees all]

In the dry season, I have 40 in the fronts and 50 in the rears. In the wet season, it's 30 and 40. Unless I'm carrying nuts; then it's back to 40, 50.

Edited February 2, 2019 by owl sees all

[JaiLai]

12 hours ago, wgdanson said:

Here's a thought. In UK the law says you must have your tyres (English) at the Manufacturer's Recommended Pressure. You can get fined or your insurance could refuse to pay out in the event of an accident proved to be caused by incorrect tyre pressure.

What about cars which, on the plate, say for example Rear pressure 30 psi empty, 35 psi loaded. Does that mean that before you take Granny and Grandad to the train station you must put anoth 5 psi in your tyres, and let them down again after they get out?

Nothing to do with Thailand

[wgdanson]

9 hours ago, JaiLai said:

Nothing to do with Thailand

Neither has Brexit or Trump but they still get discussed.

[HAKAPALITA]

16 minutes ago, wgdanson said:

Neither has Brexit or Trump but they still get discussed.

Brits only discuss Weather, Bisto and that Korbin Klown that i hear come mid day..

[cornishcarlos]

http://www.legislation.gov.uk/uksi/1986/1078/regulation/27/made

 

The law in the U.K regarding tyres...

 

Para b. relates to pressures but it's open to a wide degree of interpretation. No mention of manufacturers recommended pressures.