Automatic tire inflator keeps pressure constant

They are working on a version for cars and light duty trucks so it may be on the market at some point in the future. It may also end up going the way of the TPMS which are standard on all new cars. If the government gets involved it may be mandated on all vehicles as a safety measure and as an economy factor for better fuel mileage with properly inflated tires.

A rotating hub air seal sounds interesting but it could also be a easy failure point loosing all of your 80lb plus air pressure...

As long as it has been being used now must have a pretty good reliability rate.

Roy Ken