Nonda Zus Tire Pressure Monitoring System | $90 | Amazon
Graphic: Shep McAllister
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While most modern cars include a dashboard light that lets you know when a tire is getting low on air, Nonda’s ZUS tire safety monitoring system can tell you a whole lot more.

Just plug the Bluetooth caps onto your tires’ air valves, plug the receiver into a DC outlet in your car, and pair your phone. You’ll be able to see the exact pressure of all four tires, get warnings when any of them have slow leaks, and even see how hot each tire is getting, which can be a warning sign for a blowout.

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Burn rubber and get over to Amazon to buy the complete set for $90, which is a match for the best deal we’ve ever seen.