Pacific Dualies 18101 MAX EZ Air 7" Braided Stainless Steel Valve Stem Extensions with Small EZ Wire Clip For Ford E350/E450 Dually Trucks RVs Motorhomes with 2" Round Vent Holes

Because of their age, I'm replacing all 6 tires on my 2006 class C Motorhome with New Michelin tires. The motorhome only has 30,000 miles on it and has never seen a winter. I also decided to replace all my valve extensions because of their age. Purchased these 7 inch extensions from Pacific Dualies for my two inner wheels on the rear axle dually setup. Both new 7 inch extensions installed fine BUT would not allow you to check the tire pressure. Luckily I tested them before installing the wheels and tires. I re-installed my old extensions (which look identical to the new ones) and they old extensions work as expected and I can check the tire air pressure. Very disappointed in the product. Since both extensions didn't work, they must have a design or fabrication problem.

Worthless. After spending $83 for a truck tire shop to install these extensions on my inner dual tires on my RV, they lasted <50 miles. Had also installed a TPMS system. At roughly 50 miles, I got a pressure warning for one of the inner tires. I pulled off the road, and found that the wire clip had come loose, and the extension curled in between the tires. It had also damaged the TPMS sensor ($79/pair). The pressure was 40 instead of 80, and was dropping rapidly. Had to get a trucker to help me remove it and get tire in that tire. Solution is to just replace the entire valve stem with a solid metal. NO FLEXIBLE EXTENSIONS!

they worked just fine for me

mechanic said that these are a poor choice for RV tires.