[glbeaty]

3mm is about a third of total tread depth, and 1% of the tire's radius. Why wouldn't this be detectable? ABS sensors tend to have 48-tooth tone rings and there's no reason why you couldn't vastly increase this number if you wanted.

Longitudinal tire slip is caused by thrust in excess of the tire's grip, which is a function of slip speed among many other things. Grip peaks with a mild amount of slip, but slip isn't the norm outside of racing. Mild acceleration produces zero slip.

Lateral slip angle is a different story.

[rightbyte]

The slip is only 0 when free rolling by definition of the rolling radius.

You also have the rolling radius depend on load (car mass) and tire pressure.

I don't say I know it is impossible, but it feels like there is way to much noise.