Zero Psi = Slow Puncture??

montytheferret

Noticed the back left tyre looked a bit flat this morning... took it to the esso and checked... it was zero psi!!

Im presuming that simply pumping this up is pointless and i need to take it to the tyre shop for repair??

Nissan doctor

If it was at 0 PSI and you drove it to a petrol station then its very likely that your going to need a new tyre now not a puncture repair.

Alanstrainor

OP, I'm going to presume the pressure gauge in esso was not working. As said, 0 psi means there was nothing in the tyre at all and you drove on a completely flat tyre.

montytheferret

Alanstrainor wrote: »

OP, I'm going to presume the pressure gauge in esso was not working. As said, 0 psi means there was nothing in the tyre at all and you drove on a completely flat tyre.

no cause the other tyres were at 30psi... sorry i posted the last reply with a different username

Nissan doctor

What size tyres are they? Profiler G's wouldn't be a huge stock item in Ireland.

Alanstrainor

I see you've got multiple accounts...

What car is it? Only explanation I can think of is that you've got runflats.

Nissan doctor

Alanstrainor wrote: »

I see you've got multiple accounts...

What car is it? Only explanation I can think of is that you've got runflats.

Wouldn't have looked flat then:)

Alanstrainor

Nissan doctor wrote: »

Wouldn't have looked flat then:)

Doh...

h3000

Are they run flats?

h3000

Nissan doctor wrote: »

Wouldn't have looked flat then:)

Do they not look a bit soft when there is no air in them?

montytheferret

tyre is 195/50r 15 82v

Dunno if they are runflats... they were on the car when i got it

http://www.bfgoodrich.co.uk/bfgoodrichuk/en/tyres/advantages/20071217163252.html

Nissan doctor

h3000 wrote: »

Do they not look a bit soft when there is no air in them?

Very very slightly, not noticeable to most people..

montytheferret wrote: »

tyre is 195/50r 15 82v

Dunno if they are runflats... they were on the car when i got it

http://www.bfgoodrich.co.uk/bfgoodrichuk/en/tyres/advantages/20071217163252.html

They aren't runflats so. If your other tyres are in perfect condition then maybe camskill.co.uk or eiretyres.net might be the best option.

montytheferret

Will i go down to the tyre shop anyway and see what they say?

It would take about a week to order them online though .. i do about 55miles a day 4 days a week.

A bit much for the spare tyre? I could always resort to public transport..

montytheferret

montytheferret wrote: »

Noticed the back left tyre looked a bit flat this morning... took it to the esso and checked... it was zero psi!!

Im presuming that simply pumping this up is pointless and i need to take it to the tyre shop for repair??

I'm intrigued (ish)
Since you pumped it up has it held pressure?

If you drove on it flat I'm amazed you haven't damaged (ruined actually) the tyre.

The tyre shop should have two matching tyres in that size for reasonable money, no need to stick with the BFs really if it will be a week coming, if your spare is a spacesaver you'll be limited to low speed while it's on.

montytheferret

I put the spare wheel on.. space saver indeed 50mph...

There is a nail in the original tyre.

Ill see if the tyre shop can repair the tyre if not ill order a new one online and just drive the short journey to the train station instead until it comes...

Or keep it at 50mph or below:pac:

montytheferret

When i get new tyres i should get two yeah?? is it better to put the new ones on the front or the back?

Nissan doctor

montytheferret wrote: »

I put the spare wheel on.. space saver indeed 50mph...

There is a nail in the original tyre.

Ill see if the tyre shop can repair the tyre if not ill order a new one online and just drive the short journey to the train station instead until it comes...

Or keep it at 50mph or below:pac:

DON'T let anywhere just plug it...make sure they remove the tyre from the rim and properly inspect the inside of the tyre.

montytheferret

Nissan doctor wrote: »

montytheferret wrote: »

I put the spare wheel on.. space saver indeed 50mph...

There is a nail in the original tyre.

Ill see if the tyre shop can repair the tyre if not ill order a new one online and just drive the short journey to the train station instead until it comes...

Or keep it at 50mph or below:pac:

DON'T let anywhere just plug it...make sure they remove the tyre from the rim and properly inspect the inside of the tyre.

The tyre place said that the tyre is perished... Can't repair.. They are 2007tyres... He said that the bfs age before their time.. Front two are fine they are 2010,,,, he said something about pumping foam into it to get me buy until new tyres arrive

Nissan doctor

montytheferret wrote: »

The tyre place said that the tyre is perished... Can't repair.. They are 2007tyres... He said that the bfs age before their time.. Front two are fine they are 2010,,,, he said something about pumping foam into it to get me buy until new tyres arrive

Sounds like you found someone with a clue anyway, although, did he remove the tyre?. The BF's can suffer premature perishing, as can Michelins. Its not advisable to drive at high speed on that foam stuff either but at least you'd have better grip then the space saver.

Camskill deliver next day if the tyres are in stock though..

montytheferret

montytheferret wrote: »

When i get new tyres i should get two yeah?? is it better to put the new ones on the front or the back?

Well best to get two matching ones. I can't understand how a tyre shop wouldn't have 195 50 15s in stock to be honest. Loads of cars still about running that size.

Nissan doctor

RoverJames wrote: »

Well best to get two matching ones. I can't understand how a tyre shop wouldn't have 195 50 15s in stock to be honest. Loads of cars still about running that size.

If the OP is looking for BF Goodrich they'd be unlikey to have them.

Nissan doctor

Nissan doctor wrote: »

If the OP is looking for BF Goodrich they'd be unlikey to have them.

Oh yeah, defo, I know that

RoverJames wrote: »

...............
The tyre shop should have two matching tyres in that size for reasonable money, no need to stick with the BFs really if it will be a week coming, if your spare is a spacesaver you'll be limited to low speed while it's on.

montytheferret

I think i fancy getting the bf goodrich g force profiler again... like the look of them... they are good in wet weather...€65 on eiretyres anyway will have another look at camskill but didnt see them.

Ill probably do enough miles to justify changing them anyway after 3 years.

Ill get by with the space saver in the meantime.

New tyres are better to go on the front?

Nissan doctor

montytheferret wrote: »

I think i fancy getting the bf goodrich g force profiler again... like the look of them... they are good in wet weather...€65 on eiretyres anyway will have another look at camskill but didnt see them.

Ill probably do enough miles to justify changing them anyway after 3 years.

Ill get by with the space saver in the meantime.

New tyres are better to go on the front?

You'll get conflicting reports on this, there are cases for putting them on front or back.

I personally, would rather then on the front.

montytheferret

What if i were to get tyres from a different brand like firestone.. maybe not as good as the bf goodrich g force profiler in the wet etc...

Would it be better to leave these BFs on the front to get the benefit of them?

Its only a small car anyway so im not racing around ! A to B really.

pajo1981

0 PSI = total vacuum.

You'd normally have to pay good money for that kind of action.

Nissan doctor

montytheferret wrote: »

What if i were to get tyres from a different brand like firestone.. maybe not as good as the bf goodrich g force profiler in the wet etc...

Would it be better to leave these BFs on the front to get the benefit of them?

Its only a small car anyway so im not racing around ! A to B really.

Thats fine, once both tyres on the one axle are the same you won't have any issues. The firestone tz300 are perfectly good in the wet. I have them myself.

montytheferret

montytheferret wrote: »

................ i do about 55miles a day 4 days a week.

....................

montytheferret wrote: »

..................

Ill probably do enough miles to justify changing them anyway after 3 years.

...............

Indeed, the guts of 35k miles out of a pair of tyres isn't bad at all.

pajo1981

pajo1981 wrote: »

0 PSI = total vacuum.

You'd normally have to pay good money for that kind of action.

I wouldn't imagine a garage forecourt pressure gauge gives a reading in absolute pressure so by 0 psi I would be thinking it's in relation to atmospheric pressure as a tyre pressure gauge gives a gauge pressure reading, the OP did state he took it to the Esso to check :pac:

montytheferret wrote: »

Noticed the back left tyre looked a bit flat this morning... took it to the esso and checked... it was zero psi!!

..............

montytheferret

RoverJames wrote: »

Indeed, the guts of 35k miles out of a pair of tyres isn't bad at all.

Well in the new year itll only be 3 days a week... and the mileage may decrease next summer depending on what happens next!

montytheferret

Opinions...

is it alright to drive on the space saver for about a week untill new tyres arrive??

Dont worry ill be taking it very handy... might even just drive to the train station instead of dublin sometimes.

Nissan doctor

montytheferret wrote: »

Opinions...

is it alright to drive on the space saver for about a week untill new tyres arrive??

Dont worry ill be taking it very handy... might even just drive to the train station instead of dublin sometimes.

Its fine once you stay below the max speed for the space saver as above that they are not designed to give any traction.

On an aside, the amount of times I've seen cars doing 120k on motorways with space saver on is mind boggling!

Mycroft H

pajo1981 wrote: »

0 PSI = total vacuum.

You'd normally have to pay good money for that kind of action.

Your dead right. In fact the tyre would be sucking towards the rim at sort of pressure.

My money is on the gauge in the petrol station being broken

BX 19

BX 19 wrote: »

Your dead right. In fact the tyre would be sucking towards the rim at sort of pressure.

My money is on the gauge in the petrol station being broken

...... my money is on the gauge pressure being 0psi if the tyre was flat

pajo1981

RoverJames wrote: »

I wouldn't imagine a garage forecourt pressure gauge gives a reading in absolute pressure so by 0 psi I would be thinking it's in relation to atmospheric pressure as a tyre pressure gauge gives a gauge pressure reading, the OP did state he took it to the Esso to check :pac:

I wasn't really being serious.

All pressure readings are relative to 0. Atmospheric pressure is about 14PSI.

pajo1981

pajo1981 wrote: »

I wasn't really being serious.

All pressure readings are relative to 0. Atmospheric pressure is about 14PSI.

Gauge pressure - absolute pressure - not the same

Atmospheric pressure is 13.7PSI as you say, a deflated tyre has 0PSI gauge pressure in it, press the valve and there's no hiss.

0PSI absolute pressure is a vacuum, if the deflated tyre had 0PSI absolute pressure and the tyre and wheel were strong and big enough the world would be sucked into it if the valve was big enough when open :pac:

pajo1981

RoverJames wrote: »

Gauge pressure - absolute pressure - not the same

Atmospheric pressure is 13.7PSI as you say, a deflated tyre has 0PSI gauge pressure in it, press the valve and there's no hiss.

0PSI absolute pressure is a vacuum, if the deflated tyre had 0PSI absolute pressure and the tyre and wheel were strong and big enough the world would be sucked into it if the valve was big enough when open :pac:

Sorry, I hadn't heard of gauge pressure before.

gauge=absolute-atmospheric... awesome.

ianobrien

RoverJames wrote: »

Gauge pressure - absolute pressure - not the same

Atmospheric pressure is 13.7PSI as you say, a deflated tyre has 0PSI gauge pressure in it, press the valve and there's no hiss.

0PSI absolute pressure is a vacuum, if the deflated tyre had 0PSI absolute pressure and the tyre and wheel were strong and big enough the world would be sucked into it if the valve was big enough when open :pac:

pajo1981 wrote: »

Sorry, I hadn't heard of gauge pressure before.

gauge=absolute-atmospheric... awesome.

pajo1981 wrote: »

I wasn't really being serious.

All pressure readings are relative to 0. Atmospheric pressure is about 14PSI.

To avoid confusion, most pressures have an additional letter attached to the end, either "g" or "a". For example PSIg (Gauge pressure) and PSIa (Absolute pressure)

Convention is now that PSIg is shortened to PSI, and PSIa is always quoted as PSIa or usually PSI(absolute)

Nissan doctor

Jese lads ffs. The science of tyre pressure!

Tyres take around 30psi, that's all people need to worry about I'd imagine.

rsole1

We all have to make such decisions in life - you must make yours.

Nissan doctor

Nissan doctor wrote: »

Jese lads ffs. The science of tyre pressure!

It was nothing more than an informative chat really.

Nissan doctor

RoverJames wrote: »

It was nothing more than an informative chat really.

And people say I'm a nerd:P

savagecabbages

I'm ringing the anal police(again):p

montytheferret

I ordered tyres off eiretyres.com today.... but a few hours later i got a call back from a garage saying they had those tyres in stock...

Do eiretyres.com let you cancel? cant find anything on their page about cancelling... only mentions returning the tyres once you receive them not cancelling an actual order place...

The number they have in germany doesnt work. there is also some uk number i will try that.

photolessons

Make sure you have that rim checked out if you were driving around with a flat on it...