Works well. The tire pressure fluctuates a bit, but that doesn't bother me. When I picked up a nail once, it started flashing red at about 22psi, giving me just enough time to stop while the tire was still connected. That's why I installed it. The batteries on the steering wheel lasted about a year. The print becomes more random when the batteries run out. The sensors still have the original batteries. I installed metal valve stems when I installed them. The guys at the store have had customers who have had their rubber stems snapped by TPS systems.