For people with hearing loss, the sound signals from the inner ear to the brain will be weaker than normal, and it's possible that the brain amplifies these signals too much to compensate, resulting in hypersensitivity. However, this doesn't explain the cause in those with hyperacusis and no hearing loss.
Bicycle Valve Stem Types. There are three types of bicycle valve stems in use: Schrader, Presta and Woods/Dunlop. The Woods or Dunlop valve stem style is much more rare than the other two. Any wheel rim that fits a Schrader valve can also fit a Woods or Presta valve.
Watch Size and Conditions. In some cases, the stem hole in the wheels for these tires is the same size as the valve stem hole in a passenger vehicle wheel. The TR413 and TR415 series valve stems were originally designed to handle inflation pressures up to 60 psi (4.1 bars). Today, they are rated at a maximum of 65 psi (4.5 bars).