Everybody needs to look at this very carefully

[DSM10000]

No need to check my Merc.....its tells me.....like any other car in the last 15 years or so. When I do check they never lose much more than a pound a month max....I think weekly checking is excessive personally.....if you are losing air every week something is wrong.

Not checked weekly because of air loss, just part of the overall check of fluids etc plus madam chucks the RR down ruttred tracks so it's more a check of tyre and wheel damage!

She only drives it sedately when towing the half a ton of glue on legs!

 

[ALFAitalia]

As said by others .

It depends on many factors. There is no "correct" setting. The manufacturers recommend a range based on load etc.

Do you know the load index of the tyres you have fitted? Are these the same as those supplied by the factory when new?

True....within reason....

Yes, driving with incorrectly inflated tyres (too high or too low) is an offence in the UK. You can face a fine and penalty points on your license if caught driving with illegal tyres, including those with excessive or insufficient pressure. The penalty is up to £2,500 and 3 penalty points per illegal tyre.



From FI tyres site.

Can you drive with low tyre pressure?​

It is illegal to drive a vehicle with the incorrect tyre pressure. Not only is it unsafe but it can impact the tyre performance and lifespan. Low tyre pressure can result in under-inflated tyres, raising the likelihood of tyre damage or blowouts.

What happens if I drive with tyres that have low tyre pressure?​

There is no specific minimum limit for tyre pressure but if stopped by the police you could be fined or incur penalty points on your driving licence if your tyres are found to be underinflated. If involved in an accident your insurance company may refuse to pay out compensation if you are driving on dangerous tyres.

 

[ALFAitalia]

Is anyone else here old enough remember trying to get ideal tyre pressures using a chalk line across the tread and checking it wore off evenly?.....nope?....just me then!!

 

[DSM10000]

True....within reason....

Yes, driving with incorrectly inflated tyres (too high or too low) is an offence in the UK. You can face a fine and penalty points on your license if caught driving with illegal tyres, including those with excessive or insufficient pressure. The penalty is up to £2,500 and 3 penalty points per illegal tyre.



From FI tyres site.

Can you drive with low tyre pressure?​

It is illegal to drive a vehicle with the incorrect tyre pressure. Not only is it unsafe but it can impact the tyre performance and lifespan. Low tyre pressure can result in under-inflated tyres, raising the likelihood of tyre damage or blowouts.

What happens if I drive with tyres that have low tyre pressure?​

There is no specific minimum limit for tyre pressure but if stopped by the police you could be fined or incur penalty points on your driving licence if your tyres are found to be underinflated. If involved in an accident your insurance company may refuse to pay out compensation if you are driving on dangerous tyres.

Wasn't disputing that at all

Of course "correct" tyre pressure isn't constant as outside air temperature, road speed etc will cause the pressure to change in use
Were doomed!

 

[markjay]

Is anyone else here old enough remember trying to get ideal tyre pressures using a chalk line across the tread and checking it wore off evenly?.....nope?....just me then!!

It may surprise you to know that some of this old stuff is still around:

https://www.amazon.co.uk/Gunson-G4008-Trakrite-Wheel-Alignment/dp/B0012M9KEC

 

[sonofspeke]

For those without wheels like this with run flats the correct pressures may shock you, found this online.

 

[ALFAitalia]

Most the caravan we sell run at 65 psi!! All done to minimise tyre flex and therefore heat buildup.

 

[SL222]

TPMS reported 37psi from new 12000 miles and this is the result.

Now this is very interesting - I've had 2 tyres replaced in 6 months due to wear on the inside, one looked like this, and I have been ultra geeky about always running them at the correct pressure. Inside the fuel flap on my E-class it says 260 kPa = 38 psi which is the correct translation, and does not give separate pressures for run flats / normal tyres.

 

[ALFAitalia]

Pressure didn't cause that.....that's possible an alignment issue.......but looks more like structural failure.

 

[DSM10000]

For those without wheels like this with run flats the correct pressures may shock you, found this online.

What's shocking?

 

[SL222]

Pressure didn't cause that.....that's possible an alignment issue.......but looks more like structural failure.

This was 2 months after I had full 4 wheel alignment done at an Indy I trust so I think structural failure most likely, but tyre was only 3 years old so not impressed.

 

[ALFAitalia]

Three years old since you fitted them....or three years old according to the date code on the sidewall??

 

[SL222]

Three years old since you fitted them....or three years old according to the date code on the sidewall??

Three years according to the date code, and that ties in with when the car was built so we assumed they are the original tyres. I've only had the car 6 months so can't be sure.

 

[DesireeE]

Did you not check tyre pressure regularly before?

I check all 3 cars and my motorcycle weekly. It only takes a few minutes per vehicle.

Old school common sense!

Old school survival instinct!

No, something I have never routinely done, shoulda-woulda-coulda and odd really as I am a firm believer in common sense especially when it comes to safety, but the reasons I don't are probably a mix of the following: trusting in the cars to tell me there is a problem, I don't bend too well in the middle and run out of puff and a dose of CBA ashamedly so.

I have now been guilt tripped so will try to do better and have recently bought a manual foot pump for each jalopy to got with the so say easy battery ones, which don't have the puff either to do more than two tyres, so at least some thought has gone into it

 

[markjay]

Carrying a tyre inflator in the boot is actually a very good idea.

Unless you experience a blow out, most punctures result in gradual air loss. This means that by simply reinflating a flat tyre, there's a good chance that you'll be able to drive the car at least until the nearest petrol station, or possibly even home or to a tyre fitter nearby.

This beats having to deal with a flat tyre at the roadside. Again, it won't always work, but it will get you out of a tight spot in the majority of cases.

 

[DesireeE]

Now this is very interesting - I've had 2 tyres replaced in 6 months due to wear on the inside, one looked like this, and I have been ultra geeky about always running them at the correct pressure. Inside the fuel flap on my E-class it says 260 kPa = 38 psi which is the correct translation, and does not give separate pressures for run flats / normal tyres.

Wow ... that's some kinda scary right there!

 

[SpikyMikey]

View attachment 170976

No, something I have never routinely done, shoulda-woulda-coulda and odd really as I am a firm believer in common sense especially when it comes to safety, but the reasons I don't are probably a mix of the following: trusting in the cars to tell me there is a problem, I don't bend too well in the middle and run out of puff and a dose of CBA ashamedly so.

I have now been guilt tripped so will try to do better and have recently bought a manual foot pump for each jalopy to got with the so say easy battery ones, which don't have the puff either to do more than two tyres, so at least some thought has gone into it

You need one of these; cracking bit of kit

 

[DSM10000]

View attachment 170976

No, something I have never routinely done, shoulda-woulda-coulda and odd really as I am a firm believer in common sense especially when it comes to safety, but the reasons I don't are probably a mix of the following: trusting in the cars to tell me there is a problem, I don't bend too well in the middle and run out of puff and a dose of CBA ashamedly so.

I have now been guilt tripped so will try to do better and have recently bought a manual foot pump for each jalopy to got with the so say easy battery ones, which don't have the puff either to do more than two tyres, so at least some thought has gone into it

I have a battery powered pump that will top up all 14 tyres if needed.

Not from flat obviously

 

[ALFAitalia]

View attachment 170976

No, something I have never routinely done, shoulda-woulda-coulda and odd really as I am a firm believer in common sense especially when it comes to safety, but the reasons I don't are probably a mix of the following: trusting in the cars to tell me there is a problem, I don't bend too well in the middle and run out of puff and a dose of CBA ashamedly so.

I have now been guilt tripped so will try to do better and have recently bought a manual foot pump for each jalopy to got with the so say easy battery ones, which don't have the puff either to do more than two tyres, so at least some thought has gone into it

I always carry one of the ones that plugs into the ciggie lighter.....no physical effort, no recharging or battery going flat, cheap as chips. Bought the first one about 15 years ago.....that died a couple of weeks back....might fault to be honest. Bought a new one exactly the same....eight quid!!

 

[DesireeE]

I have a battery powered pump that will top up all 14 tyres if needed.

Not from flat obviously

How far do you live away from me? (I josh)