Originally Posted by
Jon Wehrenberg
Lee, You need to understand that POG members rotate the valve stems and add extensions so the big black sensor caps can be installed on the valve stems. It gives me the shakes to think about how some valve stems with extensions and caps are flexing while the tires are spinning but I don't know of another way those type sensors can be installed. The outer dual has the stem rotated 180 degrees so the cap which is quite large can be installed. Trying to install it while the stem points through the hole in the wheel is not practical
Your buses and mine likely have standard stems with no extensions and we just reach them with a long, straight chuck.