[northernsouly]

I was wondering if anyone had any advice about this problem:

- Had my 704 alloys powder coated
- No tyre pressure issues before this
- All my tyres are set at 2.5 Bar (38psi) as per the sticker in the door space
- The front two tyres go down from 2.5 Bar to about 2.1 Bar in about 6-7 days
- This has triggered the low tyre pressure warning in the car a few times
- The back two tyres don't change from 2.5 Bar over the week
- I then have to add some more air about once a week
- I have spoken to the guy that did my alloys and he says it is a problem with tpms sensors. He says he will take the tpms valve apart and check for any problems (I haven't done this yet)

What do I do here?
Do I have to get two new tpms valves?

[bishbosh]

It won't be the actual TPMS sensors, more likely the valve that the sensor is attached to. I had a valve leak air around the side, lost .5 of a bar in a day! The garage I used resealed the valve and it's been fine since.

[GOF_430d]

I had a similar problem when I had my tyres replaced and it turned out that the tyre fitters had bent the TPMS sensor causing an air leak - they'd positioned the lever for removing the tyres adjacent to the sensor. Just get them to immerse the wheels in water to see where the leak is coming from.

[lethbridge]

They broke them, they fix them at their cost would be my view...