Slow puncture?

masterboy123

So my car showed up low air pressure in one of the tyres 2 days ago. So i filled up air at 250 psi in all 4 tyres.

But again today after 2 days, the same tire pressure is at 235 psi, while rest of the tyres are at 250 psi.

Could it be slow puncture or issue with air pressure sensor?

grogi

masterboy123 wrote: »

So my car showed up low air pressure in one of the tyres 2 days ago. So i filled up air at 250 psi in all 4 tyres.

But again today after 2 days, the same tire pressure is at 235 psi, while rest of the tyres are at 250 psi.

Could it be slow puncture or issue with air pressure sensor?

Puncture. Probably a valve.

masterboy123

Is valve change an expensive process?

Could resetting air sensors would help?

grogi wrote: »

Puncture. Probably a valve.

Chippy01

Remove the wheel, and give it a good dousing of soapy water, both sides, the tread, and the valve area. Wait a few minutes, and you will see the tell-tale sign of tiny bubbles where the leak is.

Sometimes old school checking reaps the best results.

Whocare

masterboy123 wrote: »

So my car showed up low air pressure in one of the tyres 2 days ago. So i filled up air at 250 psi in all 4 tyres.

But again today after 2 days, the same tire pressure is at 235 psi, while rest of the tyres are at 250 psi.

Could it be slow puncture or issue with air pressure sensor?

your joking right 250psi?

Ashleigh1986

Masterboy ... Have you alloys on the car ?
I had same problem until I got tyre completely checked.
Turned out a small hairline crack in the alloy .

Chippy01

Whocare wrote: »

your joking right 250psi?

He probably meant atmospheric pressures (BAR), and forgot the decimal point. 2.50 bar is 36psi.

Whocare

Chippy01 wrote: »

He probably meant atmospheric pressures (BAR), and forgot the decimal point. 2.50 bar is 36psi.

Oh that make sense

masterboy123

Sorry its 250 kpa (kilopascals) which is equivalent to 36 psi.

Whocare wrote: »

your joking right 250psi?

masterboy123

Yes, they are alloys.

So i will get it checked at local puncture shop.

Ashleigh1986 wrote: »

Masterboy ... Have you alloys on the car ?
I had same problem until I got tyre completely checked.
Turned out a small hairline crack in the alloy .

jimbis

It can be a number of things but your loosing air somehow so get it looked at and make sure your not driving it under inflated.
Valve, crack in the rim, bead seal or old fashioned nail in the tyre.

sporter1

I had the same issue a couple of years ago. As the alloys get older the seal between tyre and alloy becomes worse due to corrosion/dirt /hitting potholes etc. Best thing to do is get the alloys cleaned inside where the tyre comes in contact.
Regards Stephen.

Ashleigh1986

I've had to repair cracked alloys 5 times in car I have 2 and half years .
It can happen very easily .
I do a lot of motorway driving .
It can happen from the " cats eyes " on the motorway .
I've size 19s which doesn't help .
Best to get tyre totally checked out .
They will take the tyre off and need to check the alloy .
It's so easy to miss the hairline crack but it costs about €50 to get the alloy crack welded.

masterboy123

I will get it checked at a garage. Thanks everyone.

masterboy123

So it was a small nail at the tyre.
The mechanic didn't have to take out the tyre. Just took out the nail and put in some thick black thread kind of material.
Fingers crossed now

dogmatix

masterboy123 wrote: »

So it was a small nail at the tyre.
The mechanic didn't have to take out the tyre. Just took out the nail and put in some thick black thread kind of material.
Fingers crossed now

You should be fine – I had the same problem over a year ago. Used the soapy water trick mentioned above and discovered a small screw lodged in the tyre. Local garage applied the same fix you mentioned (cost me €15) and it’s been grand ever since. Well, until Tuesday of this week when all my tyres where replaced as they were approaching the thread depth limit. But a full years usage for 15 euros is a bargain in my opinion, rather 100 euros plus for a new premium tyre.

masterboy123

Thanks dogmatix

Gumbo

masterboy123 wrote: »

So it was a small nail at the tyre.
The mechanic didn't have to take out the tyre. Just took out the nail and put in some thick black thread kind of material.
Fingers crossed now

All good.
Its been plugged.

Have had it done many times over the years.

€10 in my local for standard plug or €15 to take the tyre off and patch from the inside.