We thought you wouldn't notice...
Now that you mention it, the car's running just a tick free :-)
And I know what a wheel about to fall off feels like. About a dozen years ago, a 1-ton GMC van I was driving all of a sudden picked up a real loose feel. No sooner did I get the thing on the (raised) shoulder of the freeway than the left half-axle came off, complete with tire, wheel, and brake drum.