I use the 90* metal valve stems with Garmin TMPS sensors on them and use Dyna-Beads for balancing. I will be using T valves with TireGuard TMPS sensors on my ST1300. I will be using Dyna-Beads for balance on it as well.... Never had a problem with the shrader valves other than getting a dyna-bead stuck in it when airing up the tire. Air pressure blows it out and all is well again....