Message: Do you know if it is possible to dye nylon wheels (similar to plastic wheels) that are another color. I have a pair of white nylon mag wheels for my bike, that I want to change to black, but still have a professional finish.

Yes, it is quite possible to dye nylon, by simmering it in a type of dye called "acid dye". Rit brand all-purpose dye contains acid dye and can work well for this, although it does not work well on cotton fabric.

However, black is the most difficult of all colors to dye. You might end up with only a medium or dark grey. If you would be happier with grey or some other color than with the white you have now, then I would encourage you to try. If only a stark white or stark black will do, though, this may not be the right project for you.

Here's a description of a similar project:
http://astro.umsystem.edu/atm/ARCHIVES/JUN02/msg00402.html
In this example, someone used liquid Rit brand dye successfully to dye nylon black.