Your eyes also have an image sample rate, of about 30 times/sec. So a tire rotation that almost matches that (or a multiple of that) will also produce the effect.
This is why motion pictures are at 24 frames/sec. It’s so close to our natural frame rate that the images appear to be moving. Filming at more frames per second would just be a waste of film, since it wouldn’t make a difference in appearant image motion.
I’ve never heard this before, and it goes against what I know - I must ask for a cite. The image may persist in your eye for 1/30 of a second (actually I thought it was usually longer…). But for the aliasing effect to occur, the eye must become sensitive and insensitive at a rate of 30 cycles a second. This means that if you set a strobe light at 30Hz and adjust the frequency and phase, you won’t see the light at all. I’m sorry, I don’t believe it.
If this were true watching TV would be alost impossible - similar to watching computer monitors on video.
Motion pictures are at 24fps because tests have shown that, at reasonable distances, your eye cannot detect flicker above 47Hz. Movie projectors use a double shutter so each frame is seen twice, giving a flicker rate of 48Hz. Older movies were shot at 16fps and used a triple shutter for projection.