For measuring tire pressure Paul said:
the strain on a given point on the rim will fluctuate due to tire rotation (i.e. there will be more strain when that point is near the bottom than when it's near the top), but if you keep track of something like the minimum or the average, you should be able to back out the pressure exerted by the tire. you won't get the most accurate reading, but it should be enough to tell you when the tire is going flat.
Yeah, that would work. But there is nothing connecting to the rims. We just had all 4 tires rotated. When we got in the car after it had been driven home from the tire place, the "low tire pressure" message came on. We were sitting in our driveway on an incline and had not moved the car. Off we went in search of air and a gauge. Yep, the right rear was 10 lbs low. It doesn't tell you which tire, but it sure was right.
All I can think of is the front axles not being aligned with each other or the rear axles not being aligned with each other. And all of that might come about because of the traction feature, which we have.
Artemis
