austex wrote:
If you have rubber (slightly floppy) valve stems, might want to have those replaced with all-metal type, because the caps do add a few grams of mass to the tip-end of the stem. (Discount Tire replaced mine quite cheaply, though I did bring them "loose" wheels a couple at a time - wasn't interested in trusting them to jack correctly, nor navigate their small parking area)
Yes, I highly recommend metal valve stems as well. Especially with the flow through sensors. Very likely to have a valve stem failure due to the weight of the sensor. I used metal stems with a 45° bend to them - keeps the sensors tucked in nice and tight. In the past, I used a piece of vacuum line over the valve stem to keep the stem from flexing. Made it nice and tight in the hole in the aluminum rim (a standard metal valve stem wouldn't work). Found a better type of stem later on that fit inside my aluminum rim.