Quote:
Originally Posted by flightz71
It's a design / cost call. F82 does have wider rear fenders - they just chose to flare the whole rear quarter panel instead of a fender flare.
F80 on the other had doesn't have enough space - there is a rear door in the way. Best was to do flares instead of design a custom rear door separate from standard 3-series vehicles. Ironically, most enthusiasts prefer flares as they're much more noticeable, me included.
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The 4 series was already wider than the 3 series so when it came to the F80/82 the F80 needed more flare than the F82 and the F80 ended up being wider than the F82 to accommodate the M chassis.
The F80 would have looked stupid with the F82 rear panels but ended up looking a lot better and meatier than the F82 due to classic wheel arch flares combined with the narrower body of the 3 series.