For those of you who do not have this feature in your car! Pretty handy for use on a car trailer.
Find it here: http://www.carparts.com/autoparts/Pr...022271/c-10618

Click image for larger version.  Name: G_32391G_CL_1.jpg  Views: 10  Size: 49.5 KB  ID: 1353
$98.99

REMOTE TIRE PRESSURE MONITORING SYSTEM
  • Reads tire pressure of auto or trailer up to 40 foot distance from receiver.
  • Works on up to 4 auto or trailer tires.
  • Signals low tire pressure on auto or trailer tires.
  • Program the recommended tire pressure into caps.
  • Audible signal in receiver when flat tire is detected.
  • Back lighted LCD for better viewing.
  • Tire breakdown not require - program the caps and screw them onto valve stem of auto or trailer.