I had a Low Tire Warning when I got in my car this morning. I just checked the air pressure and they all appear lower (mid-20s) than the max psi, so I'm thinking I just need to add a little air to all of them. Has anyone else had this warning appear on a regular basis, or have you only had it come on if there's a major problem? I'm at almost 6,000 miles, so I think it makes sense I probably just need to add air, but the warning light stayed on the entire way to work ... appreciate any feedback!