Dynamic wheel valve stems

Wobblewing · Post by **Wobblewing** » Tue Apr 18, 2017 3:06 pm

Hi,

Can anyone please advise if the metal valve stems on the dynamics are Alpina specific, or are they the usual BMW ones?

I'm having my wheels refurbished (Roadster S) and it would seem a good opportunity to replace them.

Thanks
Andy

nkotecha · Post by **nkotecha** » Tue Apr 18, 2017 3:48 pm

i hope they are not alpina specific as the Tyre place i use never put them back on

Wobblewing · Post by **Wobblewing** » Tue Apr 18, 2017 6:14 pm

Ok, you just use what the tyre place puts back in? Metal ones?

Am trying to keep original

Wobblewing · Post by **Wobblewing** » Tue Apr 18, 2017 6:37 pm

I don't think they are TPMS are they? The Roadster does the tyre monitor thing, but I think it's done by measuring the average rolling diameter of the wheel (?) rather than measuring the pressure.

B10BRW · Post by **B10BRW** » Tue Apr 18, 2017 7:27 pm

When I had my Roadster wheels refurbed, I replaced the metal valves with rubber.
All 4 metal ones were beginning to corrode

PerryGunn · Post by **PerryGunn** » Tue Apr 18, 2017 9:18 pm

If anyone is unaware, the original wheel valves on the RS can cause a certain amount of bimetallic corrosion on the wheel alloy, to remedy this there are replacement valves available that have a plastic washer at the base of the valve to stop the corrosion. If you are having your wheels refurbished (or tyres replaced) these are a worthwhile upgrade

These cost around Â£7 each and can be ordered from any BMW dealer: Part # 91.47.3.610.086

Photos and captions below courtesy of Ade Flint:

Here is a pic to show the difference (old valve on left):-

And a pic of the parts breakdown...
you can clearly see the PTFE washer in the new assembly (upper items) used as the new interface with the wheel compared to the old stainless one:-

Wobblewing · Post by **Wobblewing** » Tue Apr 18, 2017 9:25 pm

Spot on, thanks Perry. I can remember something like this but couldn't recall the details!

I'll get some. Ta

nkotecha · Post by **nkotecha** » Wed Apr 19, 2017 11:17 am

https://www.online-parts.co.uk/bmw-spar ... valve.html

i think this is a mistake as says they are Â£719

PerryGunn · Post by **PerryGunn** » Wed Apr 19, 2017 11:55 am

nkotecha wrote:https://www.online-parts.co.uk/bmw-spar ... valve.html

i think this is a mistake as says they are Â£719

Definitely a mistake... unless they come with free wheels & tyres...

nkotecha · Post by **nkotecha** » Wed Apr 19, 2017 3:28 pm

Just ordered some from sytner Nottingham for Â£8 each

Wobblewing · Post by **Wobblewing** » Wed Apr 19, 2017 10:22 pm

Were they in stock for immediate delivery? I'll get some sent straight to the guys doing my wheels.

nkotecha · Post by **nkotecha** » Thu Apr 20, 2017 12:50 am

Not sure my 1 series is in for mot next month so they will get delivered when they drop the car back off

Wobblewing · Post by **Wobblewing** » Fri Apr 21, 2017 9:34 pm

Ordered some today from local dealer...a couple of weeks to get them from Alpina. They seem alpina specific.