Tyre loosing pressure puzzle

[scotjimland]

One of the tyres on my Seicento looses pressure, about 10psi over the coarse of a few days .. it's on an alloy wheel.

I've had it checked at a tyre fitters and it hasn't got a puncture, no leak at the valve or the rim .. I've also had it in a bath of water and can't detect a leak .. all I can think of is a porous wheel, anyone heard of this and is there a solution ?

tia

Jim

 

[Dodgey]

If not a conventional puncture or valve issue I'd say it's still most likely the rim even if you can't see it it could be a simple as the weight of the car/deformation of the fitted tyre causes leak and no load etc it 'seals' up????

To prove simplest is flip the tyre off and inspect & clean bead mating area and try again?

Also, if you have the tyre off inspect the bead, once had a tyre place break the bead reinforcing, without realising (aledgidly) and that was interesting, seemed fine then suddenly no presure, pumped up fine but as soon as driven it would go down quickly.

 

[Terry]

Hi Jim you are probably thinking right :thumb: It happened on one of my wheels yrs ago :Sad: You can remove the trye and I was told to spray a varnish/lacquer on the inner rim, but I chose the easy option of fitting a tube :thumb:. Then again in this day will they fit a tube to a tubeless tyre ?????? It is not as though you are going for a speed record so you may find a friendly tyre fitter who will fit one for you :thumb:
terry

 

[Road Runner]

and is there a solution ?

tia

Jim

Going to end up as new tyre

 

[Sundowners]

it does sound like the rim
I would try Finilec??? or a similar product, IMHO it's worth a try.
Nigel

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[Terry]

Hi again Jim I just thought of the same solution as Sundowner but he beat me to it
terry

 

[scotjimland]

Thanks guys..

I think I'll try pumping some of the puncture repair goop into it and see if that works..

 

[scotjimland]

Going to end up as new tyre

you may well be right John .. but it's almost new .. so I'll persevere with the foot pump

 

[old-mo]

Two ways round the porous metal bit..

Both necessitate taking the tyre off ..

1.. Tape up the wheel rim (edge where tyre fit`s) and degrease the rest and get a aerosol of clear laquer and give a few coats..


2. Fit an inner tube,, probably the easiest solution.. :thumb:

 

[old-mo]

Woop`s,,, Sorry just seen terry`s post.. oh::Blush:

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[vwalan]

hi jim ,,go to a farm supplier n get some green oko works everytime unless you get a real big hole in your tyre.

 

[Sundowners]

I am not sure that fitting a tube into a tubeless is the correct thing to do these days, anyway I would not feel confident with one on a motorhome (I know yours is just for a car) It would be better than nothing on the spare though.

 

[scotjimland]

I am not sure that fitting a tube into a tubeless is the correct thing to do these days, anyway I would not feel confident with one on a motorhome (I know yours is just for a car) It would be better than nothing on the spare though.

Hi Nigel ,
tend to agree and would otherwise change it to the spare, but it's a skinny space saver metal rim .. will try the lazy option first and squirt some puncture repair goop in ..

Jim

 

[andy rob]

I wouldn't spray another thing in the tyre than air, these get you home fix's on a flat tyre, will inflate the tyre ,but they contaiminate the tyre.
take tyre off rim, turn it around (I guess it not a directional), spin the wheel on the tyre balancer & use some sort of abrisive device to 'ruff' up the edge of the bead (wire brush or maybe somtihng a bit more ) & put loads of the white tyre sealler on when they fit the tyre
job done :thumb:

 

[vwalan]

it may be get you home but having used it in maroc n got home from there it seems to work. as for damaging the tyre it does make it hard to repair later but if it stays up why repair. you can still fit a tube . tubes can be fitted into tubeless tyres but not advised on very low profile tyres . then its only tyre distributers advice not law.

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[Sundowners]

It does look as though Jim may have to buy a new wheel if he can't make one of these fixes work, he is pretty sure that the leak is not in the tyre, best of luck Jim.
Nigel

 

[ginge61]

go to a tyre depot make sure the cleen the rim well wire brush then they have a black sealing compound they brush on the rim norm works

 

[pappajohn]

Hi Jim you are probably thinking right :thumb: It happened on one of my wheels yrs ago :Sad: You can remove the trye and I was told to spray a varnish/lacquer on the inner rim, but I chose the easy option of fitting a tube :thumb:. Then again in this day will they fit a tube to a tubeless tyre ?????? It is not as though you are going for a speed record so you may find a friendly tyre fitter who will fit one for you :thumb:
terry

never, ever fit a tube in a tubeless tyre.....

the internal surface structure of the tubeless tyre is completely different to the old tubed tyres and the friction between tyre and tube will eventually cause a sudden blowout

 

[Terry]

never, ever fit a tube in a tubeless tyre.....

the internal surface structure of the tubeless tyre is completely different to the old tubed tyres and the friction between tyre and tube will eventually cause a sudden blowout

:thumb: I knew there was a reason in this day and age John just did not know why Me if the glupy stuff did not work I would still stick a tube in and make sure it was on the back especially on a wacky fiat that will only be used around town :thumb:
terry

 

[vwalan]

hi pappa not all tubeless have the ines on the inside its a matter of look n see. mitchelin have a lovely smooth inside. wonder what brian in wales has to say he runs a tyre shop.you are right some have lines very thick.

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[scotjimland]

especially on a wacky fiat that will only be used around town :thumb:
terry

heh... :Angry: ... I'll have you know this is a cool mean racing machine .. :Cool:

a highly tuned piece of Italian engineering..... built in Poland

anyways.. I bought some Holts goop and put it in today.. I'll report back on the outcome .. thanks for all the suggestions guys.. :thumb:

 

[Terry]

heh... :Angry: ... I'll have you know this is a cool mean racing machine .. :Cool:

a highly tuned piece of Italian engineering..... built in Poland

anyways.. I bought some Holts goop and put it in today.. I'll report back on the outcome .. thanks for all the suggestions guys.. :thumb:

:thumb:Remember Jim I have a wacky fiat (ford badged )Iveco m/h :thumb: Built in god knows where and on my drive in sunny S Yorks
terry

 

[mondo]

A friend of mine had the same problem a couple of years ago, he had a Ford Fusion on alloy wheels, it turned out it was the actual alloy wheel itself.At the time the fault manifested itself the car was only 2 months old ,and only had around 250 miles under it's wheels, so he took it back and told the Ford dealers the problem, asked for a replacement (very loudly I may add) and they did replace it
The dealers did try the old your not driving it right routine this fella is an "IAM" driver has done the Police advanced course like meself so that didn't work with him...Result
Driver..1

Dealers 0
:thumb::thumb::thumb:

So unfortunately Jim you may end up getting a new wheeloh:oh:oh:

 

[scotjimland]

I bought some Holts goop and put it in today.. I'll report back on the outcome .. thanks for all the suggestions guys.. :thumb:

Sorted, now almost three weeks since injecting the Holts the pressure hasn't dropped..

 

[Heyupluv]

leak

JIM
I had similar trouble on a alloy rim...took it back to the fitters who could not find a leak but what they did do was release the pressure and break the seal from the rim, they then painted with brush the tyre rim with "Tyre Seal" then re-inflated the tyre ...this is a black liquid that turns into a solid rubber after a few minutes.....with me everything was OK afterwards ...the fitters said it was normal for alloys to leak and also hard to find the leak...
Mel

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