These Tire Caps Change Color When Your Car’s Tire Pressure Gets Low


Quick! How’s your car’s tire pressure?

Don’t know? Better go check. Which, if you’re like most people, means going out, kicking the tire, saying “seems good” and forgetting about it until something is clearly wrong.

Here’s a damned clever alternative: tire caps that change color when the pressure gets too low.

While easily forgettable, tire pressure is actually kind of a big deal. When it’s too low, you’re wasting gas (low tire pressure = extra tire touching the ground = extra friction) and potentially overheating your tire. When it’s too high, you’re screwing up your traction and making it harder for your car to come to a stop. Either way is bad news.

Using a spring-loaded mechanism tucked inside of a sealed housing, a ring around the core of the cap changes from red, to black, to yellow depending on your tire’s pressure. Red means too low; yellow means too…

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