Tyre Pressure Warning + random coincidence has me questioning my sanity

**AJW** · 19-07-2016, 07:42 PM

My tire pressure monitoring went off the other day on my GTIPP as I was about to drive from Sydney to Newcastle for a work.
The day before I'd pumped all the tires to 40psi and the rear inside tyre was reading about 32psi.
Rolled the car backwards looking at the tyre in as many spots on the wheel as I could - didn't see anything.
Thought I had a slow leak, got home after 2 days after looking multiple times at the tyre and found a screw on the inside of the wheel.
So it needed about 8psi difference on one wheel before it would indicate an issue.

**mattaus** · 19-07-2016, 07:57 PM

Originally Posted by AJW

My tire pressure monitoring went off the other day on my GTIPP as I was about to drive from Sydney to Newcastle for a work.
The day before I'd pumped all the tires to 40psi and the rear inside tyre was reading about 32psi.
Rolled the car backwards looking at the tyre in as many spots on the wheel as I could - didn't see anything.
Thought I had a slow leak, got home after 2 days after looking multiple times at the tyre and found a screw on the inside of the wheel.
So it needed about 8psi difference on one wheel before it would indicate an issue.

Interesting, although my pressures were all the same when I checked. If nothing goes off early on my drive to work, I'll stop by a servo and test the pressures again.

**Mattlock** · 20-07-2016, 04:16 PM

From my experience, it seems to be only helpful if you have a big loss of air suddenly. I check my pressures every 3-4 weeks and I see movement of 2-4 psi across all 4 and it never goes off.

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**mattaus** · 20-07-2016, 05:33 PM

Well everything checked out today. No repeat issue and all parts are definitely still on my car. Case closed due to lack of sufficient evidence.

**turtle** · 20-07-2016, 07:36 PM

My GTI PP has done the same thing a couple of time. I wouldn't be too worried about it. The method it uses to calculate low pressure isn't too reliable.

**mattaus** · 20-07-2016, 09:28 PM

Originally Posted by turtle

My GTI PP has done the same thing a couple of time. I wouldn't be too worried about it. The method it uses to calculate low pressure isn't too reliable.

First time it's happened to me so I was obviously a bit thrown, especially with old mate flashing the lights!