[Help] Car tyre pressure advice sought

[AlbionBro]

Standards, kids don't have them today. There is nobody checking the standards, I would say please can you make sure you do my correct pressure all around as I will check when I get home and if I have any unnecessary tyre wear I will track you down and find you.

 

[PILTDOWN MAN]

HWT, is the car rear or wrong wheel drive?

pressures do go up with heat and it is very cold now . . .

it's not uncommon to over inflate to make sure they seal well when fitted . . . . It's also not uncommon for tyre gorillas to use a windy gun to do the nuts up 3 times tighter than recommended.

The Manwell in the glove box, and/or an online sanity check should confirm . . . . And as Bozza says the tyre will have an operating pressure range on it as well.

2.3-2.4 sounds good to me

Tyre pressures on standard cars hardly change with temp as there's not much heat induced by friction or brakes, unlike racing cars or aircraft. It's about 2psi per 10oC.

Those saying get a 12v air compressor to be sure need to realise there's no standard whatsoever on calibration. Any garage charging for air inflation by law has to have the gauge calibrated often.

 

[zefarelly]

One of my cars has different size tyres front and rear, one has TPMS and one I just kick the tyres when walking past

Not too hard or the filler drops out of the sills

 

[zefarelly]

Harry - Halford's do a free tyre check. No strings attached.

Have they got blue tooth inflator nozzles?

 

[zefarelly]

I'd burn their premises down to be on the safe side and to punish them for causing this dilema.

The pressure will go even higher if he parks too close!

 

[mile oak]

That does sound strange.

Check on the tyres themselves to see what pressure they suggest. It will be written on the side in difficult-to-read black.

The only other thing I'll say, pertinent today, is tyre pressures are low when cold and will increase when you drive and they warm up.

Yeah good point ideally inflate when cold

 

[mile oak]

Tesco I notice increased the cost of inflation by 100% 50 pence to a pound

 

[jackanada]

Your 12v portable inflator, your forecourt air machine, and your TPMS are far from being precision instruments, so unless it's way out why bother.

 

[mile oak]

HWT, is the car rear or wrong wheel drive?

pressures do go up with heat and it is very cold now . . .

it's not uncommon to over inflate to make sure they seal well when fitted . . . . It's also not uncommon for tyre gorillas to use a windy gun to do the nuts up 3 times tighter than recommended.

The Manwell in the glove box, and/or an online sanity check should confirm . . . . And as Bozza says the tyre will have an operating pressure range on it as well.

2.3-2.4 sounds good to me

most modern cars have a plate usually inside drivers door of the recommended tyre pressures.

 

[zefarelly]

most modern cars have a plate usually inside drivers door of the recommended tyre pressures.

Every car since the 1950's has something . . . . Until 30 odd yeard ago usually in clear printe in the litle book in the glove box . . . . But reading the instructions isn't the done thing now is it.

 

[Hugo Rune]

Remind us of which team the tyre blower supports @Harry Wilson's tackle

 

[PILTDOWN MAN]

Your 12v portable inflator, your forecourt air machine, and your TPMS are far from being precision instruments, so unless it's way out why bother.

Forecourt air machines have to be by law.

 

[nsclurker]

Front tyres are usually higher, as they carry more weight (engine, driver, etc.) - they are on my son's Ford Ka and my 4-wheel drive Audi lump - unless the car has very good weight distribution, like the wife's e-Golf.

Also, why are we talking in bar rather than PSI?

 

[Bozza]

I got two of @Harry Wilson's tackle's finest hugs.

I know this is the news everyone was waiting for.

 

[Harry Wilson's tackle]

Remind us of which team the tyre blower supports @Harry Wilson's tackle

Not sure I remember.

Hang on....

 

[Flounce]

Front tyres are usually higher, as they carry more weight (engine, driver, etc.) - they are on my son's Ford Ka and my 4-wheel drive Audi lump - unless the car has very good weight distribution, like the wife's e-Golf.

Also, why are we talking in bar rather than PSI?

Did Brexit mean a return to Imperial then?

Team Bar here

 

[Harry Wilson's tackle]

Your 12v portable inflator, your forecourt air machine, and your TPMS are far from being precision instruments, so unless it's way out why bother.

I think that when the recommendation is 2.3 and my car's own pressure display is telling me the pressure is 2.9 we may have an issue.

I dropped the pressures down to 2.4 according to the Sainsbury gauge before the match yesterday and the tyres registered 2.3 2.4, 2.4 and 2.5 for the rest of the evening, going up slightly after driving for a bit. So I am guessing my car's sensors and the Sainsbury one are all precise and accurate to 0.1 units.

 

[Shropshire Seagull]

Front tyres are usually higher, as they carry more weight (engine, driver, etc.) - they are on my son's Ford Ka and my 4-wheel drive Audi lump - unless the car has very good weight distribution, like the wife's e-Golf.

Also, why are we talking in bar rather than PSI?

Rear pressures should be increased with extra load. 2 adult passengers in the back plus full tank of fuel could add 200kgs (or more if they're lardys). Then there is a caravan possibility (for some).

Also, if driving in snow or ice, lower all 4 by about 10% will give the tyre a little more flex to help with grip. Remember to reinflate once normal road conditions return.

On my skidpan driving course I learned how to calculate aquaplaning speed. 15 years ago now but something like Sq-root of the tyre's pressure times 10 = MPH

 

[alanfp]

Tesco I notice increased the cost of inflation by 100% 50 pence to a pound

Well that's inflation for you!

 

[jackanada]

I think that when the recommendation is 2.3 and my car's own pressure display is telling me the pressure is 2.9 we may have an issue.

I dropped the pressures down to 2.4 according to the Sainsbury gauge before the match yesterday and the tyres registered 2.3 2.4, 2.4 and 2.5 for the rest of the evening, going up slightly after driving for a bit. So I am guessing my car's sensors and the Sainsbury one are all precise and accurate to 0.1 units.

The 2.9 definitely counted as way out, and whoever fitted your tyres is definitely an arse.