This is the trouble with your argument though - yes it can, long before the driver notices unusual handling. TPMS has been around for a decade or so. Edit: I pay attention when driving, and I drive a car that's fairly communicative. I noticed when cornering a while back that something was amiss. The tyre was pretty much flat (after changing to/from winters that day - didn't seal properly). TPMS would have told me well before that.