Forget about the complicated tire pressure monitoring systems integrated into luxury cars, the P-eye makes the task of checking your tire's pressure simple, very simple. It's a cap for the tire that will blink red when the tire is 5-percent below its recommended pressure. The system does have a flaw, albeit a minor one.

How will you know when your tires' pressure is low? You're never able to see the tires when driving. We'd guess you would just have to get lucky and have the LED light blink at the right moment at night when it is visual and you are out of the car coming to or fro. It' available is a couple different models—the P-Eye UKP20 is the standard model and the UKP22 is the anti-theft model. [Via Gizmag]