There is currently a definition for this word that states "The wrong word used for a car's wheel. Used by rappers and morons who do not realise that a rim is not a wheel." While there may be some people who use the word incorrectly, for the most part if someone says " Yo, dawg, check out those rims"( the example sentence), I would simply figure they knew that rims are attached to the center of a wheel. A wheel or tire is not really something that attracts too much attention, unless it's a whitewall tire. The rims, on the other hand, come in very flashy styles of many different types of metals, which IS very noticeable.
That '84 Cadi's chrome rims are tight!