Fixing slow puncture...

[CIS121]

It's taking about 2 weeks to go from 34PSI to 28PSI. It's an old workhorse car and a fairly well treaded tyre so reluctant to replace (which was the local tyre dealers only advice).

There are "self sealing" aerosol sprays available - anyone got any experience of fixing a very slow puncture with one of these?

[perdu]

CIS121 said:

It's taking about 2 weeks to go from 34PSI to 28PSI. It's an old workhorse car and a fairly well treaded tyre so reluctant to replace (which was the local tyre dealers only advice).

There are "self sealing" aerosol sprays available - anyone got any experience of fixing a very slow puncture with one of these?

your NEXT tyre repair man will hate you

but the Holts one helped me out some years ago when it was infinitely better for my wallet to "massage" my finances for a month or two

(it is effin 'orible inside the tyre afterwards though)

[CraigyMc]

CIS121 said:

It's taking about 2 weeks to go from 34PSI to 28PSI. It's an old workhorse car and a fairly well treaded tyre so reluctant to replace (which was the local tyre dealers only advice).

There are "self sealing" aerosol sprays available - anyone got any experience of fixing a very slow puncture with one of these?

Can you tell why?
If there's nothing visible, it might be a dodgy valve.

Most tyre places will do a valve for £10 or less (kwikmuppet et al excepted.)

If there's a nail or screw in the tyre, it's more complex. If the damage is near or on the sidewall, you're snookered. If it's in the main meat of the tyre, it will likely cost under £20 to fix.
C

[rawkyjnr]

How is the condition of the actual wheel upon which the tyre is placed?

If the rim has corroded and oxidised around the lip of the wheel badly enough, it can just push the tyre inwards just enough to create a small leak.

[CIS121]

Good ideas thanks guys! The puncture's so slow (2 weeks) I can't identify the air leak, but nothing obvious in the tyre. I've tried putting water over the valve to no avail and steel wheels in decent condition.

I'm a tight git, but will try the tyre weld and if no joy, will get a new budget tyre on there

Cheers!

[Zad]

If it is an alloy wheel then it has probably oxidised where the tyre meets the rim. Your local trustworthy tyre place should be able to seal and re-fit it.

[Turkey]

Are you sure it's really a puncture? On warmer days and when driven, the pressure will be higher. My tyres always lose about 0.5psi per week if the temperature stays the same, the rubber will slowly let air escape from inside the tyre, not a lot can be done about this.

If the other tyres are not changing pressure as much then this does hint at a slow puncture or leak somewhere else, but I would monitor it for another week or two to make sure.

The tyre/wheel interface can leak on corroded alloys, I had a couple of wheels cleaned up once to stop this at a tyre place and it didn't cost a lot. In my experience a slow puncture will normally lose more than 6psi in two weeks.

Edited by Turkey on Tuesday 13th July 23:35

[AndyFoo]

Had exactly the same as you, eventually had enough of getting the compressor out in the morning so threw it into ATS just down the road from me.

2 minutes later, found a cable clip nail imbedded right in the corner of one of the treads, really had to look close to see it, but with some fairy liquid mix water, showed up a treat. Being in the middle was an easy repair.

They tried the, 'hmmm looks it would be worth replacing it...' there was 4mm of tread across the width, and it was paired with one of the other side of equal wear. I did ask them to cost a replacement Avon, £85 plus balancing, valve disposal etc. That was was against a repair, £20.55.

So far so good, holding pressure good, checked it when I got home yesterday and tonight. Sound as a pound!