Places are saying 8 hubcaps. I've never seen that many. Checking. Will edit this thread with what I see from my recording.
ZV
EDIT: Have just re-watched it. The most I can stretch is 7 hubcaps. That's if I neglect that two of the "lost" hubcaps are clear repeats (Charger loses a hubcap and we immediately cut to a view from MacQueen's car where that same hubcap is being shown after it has come off the Charger and is rolling away) and that one "hubcap" looks more like something that the Charger threw up after it ran over it (object is thrown up from the middle of the front of the car, and it does look hubcap-esque, but I can't be sure). So we have, based on my observation, 4 confirmed, one questionable, and 2 clear double-counts. It is worth noting, however, that at least one of the four hubcaps that are confirmed lost was lost twice (Charger lost two hubcaps in clearly different portions of the chase but is shown later in the chase with three hubcaps).
ZV