Beeebo-us (98% positive lifetime feedback) via Amazon offers the CACAGOO Wireless TPMS Tire Pressure Monitoring System for $46.91 shipped when code ROAQUIN3 is used at checkout. Regularly closer to $70, this is the lowest that we’ve tracked and is the best available right now. If your car lacks tire pressure monitoring, this is a much more budget-friendly way to add it on than going to your dealer. Rated 4.1/5 stars.

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CACAGOO Wireless TPMS System features:

  • See the real-time air pressure and temperature for 4 tires on the screen
  • Gives you early warning of air leaks and other abnormal tire situations so corrective action can be taken and tire life can be extended
  • A sensor is attached to the cap on the air valve of each tire and communicates wirelessly with the monitor whenever the vehicle is in motion
  • Easy to read from any angle day or night
  • When the air pressure or temperature of any tire goes outside the predetermined range, both the monitor display and an audible alarm warn you
  • The sensor on each tire is IP67 rated, meaning it is sealed against dust, water, and snow

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