JoelP
Well-known member
I finally got around to installing my TireMinders on on my RV and toad this week. While I already had metal valve stems on some of my tires I needed to replace the extenders from my rear inner tires. I took it to a commercial truck tire shop who recommended that I use something called a Air-Flexx which he said he was now using for all commercial trucks and is guaranteed not to leak.
Before installing my TireMinder system I checked the cold tire inflation and carefully set it to within 1 psi of the recommended pressure. The next day when I finished the TireMinder installation I notice that the pressure in my right rear tire had dropped by 10 psi from 90 to 80psi. At first i thought it was a bad sender unit, but when I put the gauge on it I was surprised to find it now read 0 psi. I tried to add air, but I could hear none going in. With 3 different gauges I couldn't get any reading on this tire. One possibility was that there was a leak and that tire had deflated, but when tried the trucker method of thumping the tires both inner and outer tires sounded more or less the same.
Failing to understand how this was possible I took the RV back to the commercial tire shop. They also got no reading on this tire so they pulled the outer tire of this pair and removed the extender. I noticed then that the valve remains on the inner tire, but the extender is supposed to open this valve when it is screwed in place. It seems that this extender was not opening the valve on the tire itself. They changed out this extender for a new one and all was fine
Before installing my TireMinder system I checked the cold tire inflation and carefully set it to within 1 psi of the recommended pressure. The next day when I finished the TireMinder installation I notice that the pressure in my right rear tire had dropped by 10 psi from 90 to 80psi. At first i thought it was a bad sender unit, but when I put the gauge on it I was surprised to find it now read 0 psi. I tried to add air, but I could hear none going in. With 3 different gauges I couldn't get any reading on this tire. One possibility was that there was a leak and that tire had deflated, but when tried the trucker method of thumping the tires both inner and outer tires sounded more or less the same.
Failing to understand how this was possible I took the RV back to the commercial tire shop. They also got no reading on this tire so they pulled the outer tire of this pair and removed the extender. I noticed then that the valve remains on the inner tire, but the extender is supposed to open this valve when it is screwed in place. It seems that this extender was not opening the valve on the tire itself. They changed out this extender for a new one and all was fine