I have a EEZTIRE T515 with non flow though sensors. I do not use the security caps been happy with them, nice to know what's happening with your tires without any effort.
Jay Wolf Vincennes IN 2000 National Tradewinds 7373
They are ok.... For me I just quit using them and check the pressures before I leave on any major job. Thus far all is well.
4 whopping cylinders on Toyota RV's. Talk about great getting good MPG. Also I have a very light foot on the pedal. I followed some MPG advice on Livingpress.com and I now get 22 MPG! Not bad for a home on wheels.
Mine isn't a 515, it's just one with 10 sensors on a 5th wheel. Works ok.. sometimes the trailer tires take up to 20 minutes to appear, so I just installed a repeater. We'll see soon if that helps.
"If I'm wearing long pants, I'm too far north" - 2oldman