@byee :
1)That's pretty interesting news. Thanks for pointing it out to me!
2) There are currently only two reviews --
one from a C 400 GT owner!!! -- of the new product at
https://www.chigee.com/collections/accessories/products/mfp0160-tire-valve-stem, both giving it one (of five) stars:
It didn't work on my BMW C400GT. It didn't fill the tire after installing it, so I had to go back to the original.
Brand: BMW
Model: C400 GT
With this shortened valve, the tire pressure sensor has a maximum of 0.5mm of air between the brake caliper and the sensor.
Under extreme driving conditions, the sensor will touch the brake caliper or even tear off. Not usable for me...
Brand: BMW
Model: S1000XR K49 2016
(I've used Google to translate that second review from German.)
So that's not very encouraging. I wonder what the exact problem was with the C 400 GT owner -- maybe some thread issue? a valve core issue, or what? -- and the S1000 owner does raise an area of concern to me, i.e., this setup involves some extremely fine tolerances here, with regard to spacing.
3) Coincidentally,
just yesterday(!) I sent an email to the service manager of my local BMW dealership. I mentioned that I was planning on doing that in my long post
https://www.bmw-scooters.com/threads/tpms-programming.3294/post-27798 and finally got around to it.
As part of a long message, "Winter Service Requests For C 400 GT," I wrote this:
So, my request to you is this:
==> Have in stock two 36 31 7 106 019 RDC SENSORS.
==> Have in stock two 36 31 7 106 018 TORX SCREW - M8X20.
==> If I am correct in my understanding of the situation that there are threaded areas in the outer part of the rims on the C 400 GT that accept those screws, have the RDC sensors mounted inside the rims, as part of the tire-replacement work.
I haven't heard back from him yet, and I'm curious if he will raise any objections, have any comments, etc.
4)
Nevertheless, I just ordered "MFP0160 Tire Valve Stem for TPMS" from Chigee. Just one of them (and shipping almost doubled the cost).
This will go with the corresponding BMW 36 31 7 693 061 valve that I bought about two years ago, so I could examine it up close, without messing with the air in the bike's tires. Now I will have two of these assemblies, to compare and contrast. I'll put my calipers -- the measuring kind, not the braking kind -- on the products, and let you know the differences.
Thanks for keeping an eye on this. And I added my email for new-product notifications (but not to their FB group, as I don't have a FB account).