tire guage

[medic]

I was watching MotorWeek about a month ago and they mentioned there was a tire guage you can buy to replace you standard valve stems. It constantly displays the tire pressure in numbers and by color so you can just walk around the car and quickly see if you're running low anywhere.

Does anyone have these?

[Dave Holmes]

I had them (the ones with the green, yellow, and red colors). Mine were the 36 psi ones, which would show green from 36-32 psi, yellow from 31-28 or so, and red below that. They are convenient, but one of the clear plastic covers came off, rendering it useless. I have since gotten blue anodized (to match my calipers) acorn style. I'll just use a regular tire gauge to check my pressure.

Dave