Neat idea. At $25 a pop every other year seems a little steep for the ave RV that take the unit out a week or two every year. If tire life is calculated at 5 years and the caps are replaced every other year. I would spend about $62.50 for the life of a set of tires. Which may be the cost of 3/4 of a tire, for the convience of not putting on a tire gauge. And in the AZ sun I am not going to see the light unless it's at night or I am standing right over the tire. To check the battery of the light one needs to unscrew the cap. If I do that I might as well put a tire pressure gauge on it.
I think I might use my tire gauge more often. It's $5 and doesn't need a battery. I need the exercise in bending over to check the pressure anyway.
1966 Mercury Park Lane 4 DR Breezeway 410 4V, C-6, 2.80 - Streamless.
1966 Lincoln 4 door Convertible 462 4V 1971 Ford LTD Convertible 429 4V Phoenix ~ Yeah it's hot however it's a dry heat!