hi guys

 

i am using my spare wheel and just wondering what the psi should be? right now i have used 20 psi as the normal wheels are 30 psi but becuase the spare wheel is smaller, i have used 20, is this correct?

 

couldnt find any info on the net as they said between 30 and 65 psi and another one said 30 psi, that has got to be for a normal size spare wheel.

 

many thanks

If you have a space saver spare then the pressure should be very high about 65 psi.

Why do you think the pressure should be lower just because the wheel is smaller? It doesn't seem logical to me though I don't know for sure. With tyre inflation I would err on the side of over rather than under inflation, so would agree with Sepulchrave who replied just now while I was typing. Probably a good idea to get a proper wheel and tyre fitted a.s.a.p.

 

Normal tyre presure on car should be between 30psi to 32psi, spare wheel space saver type should be 60psi-to 65psi, it might seem high but in respect my mountain bike has 60psi pressure in them so smaller tyres does not mean smaller pressure

@froggy8 what size is the spare, something like 185/60 r 15?   Store in the car over inflated and when fitted drop to maybe 40 ps.    Still reduce your speed when fitted even if no sticker on the wheel telling you to. 

thank you guys,

 

have took some pictures of the tire:

 

 

 

 From memory, I think you may find an inflation pressure moulded into the sidewall. Is there anything on the pressure chart in the fuel filler cover.

Edited 28 February, 20224 yr by KeithCheetham
Data in filler cover?

It's a space saver, inflation pressure is moulded into the sidewall.

thank you guys,

 

will have another look later.

ok, took more photos:

 

 

 

it says 63, so im guessing 63 psi?

It's not that critical, just pump it up until it doesn't look 'soft' and squidged at the bottom.

How long do you plan to drive around on it? Surely only 'til the normal tyre is repaired or replaced? A day or two?

 

2 minutes ago, Pete_Ex-Wino said:

It's not that critical, just pump it up until it doesn't look 'soft' and squidged at the bottom.

How long do you plan to drive around on it? Surely only 'til the normal tyre is repaired or replaced? A day or two?

 

thank oyu,

 

yeah the wheel doesnt feel soft and doent look squidgy at the bottom too.

 

i wont be driving now till the weekend then il get my normal wheel repaired next monday.

Edited 28 February, 20224 yr by froggy8

@froggy8 -

7 hours ago, KeithCheetham said:

 From memory, I think you may find an inflation pressure moulded into the sidewall.

 

Particularly as a spare tyre you want it inflated to the correct pressure, generally pressure gauges on foot, electric pumps and at petrol stations are well out of calibration.  As the spare tyres are usually of a different size you only really want to use them as a get-you-home only, despite how you might see others use them.  Don't go above 50mph.

 

That tyre whilst being kept in the dark of the boot is still possibly 14 years old but even if it was brand new it is a different size, type and characteristics to the other three tyres on the car so will behave differently.

 

I'm not trying to worry or scare you, just be sensible about it, get it inflated to the correct pressure, *check the pressure with a separate reliable gauge, (they're not expensive to buy) use the car as little as possible (preferably not at all) be aware you're driving with an odd tyre fitted.  Don't go above 50mph.

 

* You might also want to check the pressures of your other three tyres too, check tyres 'cold', that is before you drive the car and warm the tyres with use.  Any changes to pressure you might as well reset the TPMS on the car too as a matter of good habit.

 

Edited 28 February, 20224 yr by nta16
ETA: spare not on fuel flap

21 hours ago, froggy8 said:

becuase the spare wheel is smaller

 

What size tyre is on the rest of the wheels?

It looks like you have a 205 45 16 tyre on a steel wheel as your spare.

Is this the same size as the rest of your tyres?

If it is then it's the same pressure as the rest.

 

 

1 hour ago, nta16 said:

That tyre whilst being kept in the dark of the boot is still possibly 14 years old

Tyre was made in late 2007.

 

Thanks, AG Falco

1 hour ago, nta16 said:

Any changes to pressure you might as well reset the TPMS on the car too as a matter of good habit.

 

Highly doubt an 08 Mk2 Fabia will have TPMS on it.

Who cares how old the tyre is, it's been sitting in the boot in the pitch black its entire life, it'll be like new.

1 hour ago, AnnoyingPentium said:

Highly doubt an 08 Mk2 Fabia will have TPMS on it.

Thanks, I didn't know if it'd have any sort of tyre pressuring monitor on it or not, 2008 is almost last year when you get old.

 

 

1 hour ago, AGFalco said:

Tyre was made in late 2007.

All I saw was a black wheel hardly any tyre, you must have one of these phones where you can zoom in, well done, makes sense if it's a 2008 car.  If it's a full sized wheel and tyre why is there the 50 mph sticker on it? 

 

My wife's previous 2008 car had a spare steel wheel with a tyre that was one ratio smaller than the other four to fit in the bootwell which meant the wheel you put in its place would need to be deflated and the spare remained totally unused as it couldn't be rotated with the others.

 

11 minutes ago, sepulchrave said:

it'll be like new

Really, no really. like new, so grease like new so well under inflated.  What are the normal storage conditions for tyres then.  What's also been stored with the tyre.  Is this tyre like a new one of the other three, or like a new tyre different to the other three that also aren't new.  Is that a car trade "it's like new" 🤣 

 

I once lifted out a "new" spare tyre out of a wheel well as as I picked it out I saw there was green liquid dripping of it and my fingertips, then I saw red, my blood.  Neat antifreeze was in the wheel well and had eat through to the sidewall on the underside where I'd picked it up from.  I was much younger and even more stupid than now and wasn't wearing gloves, luckily no sense no feeling. - But the tyre was like new. 

 

19 hours ago, nta16 said:

If it's a full sized wheel and tyre why is there the 50 mph sticker on it? 

 

Same on my Fabia III.

Tyre in the boot is the same size as the ones on the car but just on a steel not an alloy.

I think the stickers are put on the spare wheel by default when the car can come with a different size tyre on the car.

 

Thanks, AG Falco

If it's the same bloody size as the rest of the tyres on the car what is the point of this thread?

 

Seriously.

4 hours ago, sepulchrave said:

If it's the same bloody size as the rest of the tyres on the car

IF.  If it is - but - if you don't know or you're not sure it is sensible to ask - and stupid not to ask.

 

No one is born knowing, everybody has to learn for a first time, I'd be surprised if that didn't include some on here. 😉

 

For those that don't already know and would like to - TYRE MARKINGS EXPLAINED - https://www.merityre.co.uk/tyres/introduction-to-tyre-markings

 

Check the maximum tyre pressure that's moulded into the sidewall.

 

This could be 3 Bar (44psi) or 3.5 Bar (51psi).

 

If you pump the tyre up to more than it's maximum rated tyre pressure, the tyre could explode possibly causing severe injury or death.

 

If in doubt, don't pump the tyre up to more than 3 Bar (44psi).

If anyone was wondering, it is 15 years old.

 

Just for info

 

Being stored in the dark stops the rubber being affected by ultra violet light / sunlight / weather etc, but doesn't stop the potential corrosion "inside" the structure of the tyre.

This is why tyres over 10 years old are now banned on HGV's and PSV's irrespective if they are new or used.

1 minute ago, UrbanPanzer said:

This is why tyres over 10 years old are now banned on HGV's and PSV's irrespective if they are new or used.

 

Only if on the front! 

 

https://movingon.blog.gov.uk/2020/12/09/ban-on-tyres-over-10-years-old-for-heavy-vehicles-and-some-minibuses/#:~:text=From 1 February 2021 Construction,annual test and a prohibition.

 

Thanks, AG Falco

2 minutes ago, AGFalco said:

 

Only if on the front! 

 

https://movingon.blog.gov.uk/2020/12/09/ban-on-tyres-over-10-years-old-for-heavy-vehicles-and-some-minibuses/#:~:text=From 1 February 2021 Construction,annual test and a prohibition.

 

Thanks, AG Falco

 

Steered axle 😉

Best not to fit your 15 year old Skoda spare tyres on the front axle of an articulated lorry, no problems is they are younger than that!