[LilStewie]

Hi guys. Have done a it of a search but couldn't locate what I need.
Apologies if this is hiding somewhere.
Have had a low pressure warning come up on the screen. Left rear down to 27psi, while right side remains circa 35psi.
I noticed that the valve stem looks like it has been hacked up a bit and wondered what you think? What's the chances it could've been done during my "annual alloy warranty replacement" (403m)? Of course, they'll hotly deny doing it. What sort of cost is it for replacement and what's the best way to go about replacing if needs be? Will I need to replace all 4 or just the one?
Car is a 2015 f30 lci. As above 403m alloys if that matters.

Cheers.

[Hooded]

First of all you need to check if the valve is actually leaking or if the tyre has a slow puncture.

You can pick up just one TPMS sensor easy enough ... for an idea of price I saw 4 new genuine BMW ones on eBay recently for £123

[LilStewie]

Originally Posted by Hooded

First of all you need to check if the valve is actually leaking or if the tyre has a slow puncture.

You can pick up just one TPMS sensor easy enough ... for an idea of price I saw 4 new genuine BMW ones on eBay recently for £123

Cheers. I am on this but just wanted to get the question out there. I did think slow puncture something

[RobUK]

There's a single TPMS valve on fleabay with a current bid of just £9 - https://www.ebay.co.uk/itm/1-x-Genui...tmaD:rk:4:pf:0

[LilStewie]

Thanks, Hooded and RobUK for your input👍