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TonyMeister and Jason are right, and there is no perspective at play - one set is elliptical, the other circular. I believe, each set comes from a different muffler, too, so it is either a test of two different mufflers, or it is a devious way to confuse us and the competition.
The OP mentioned it may be a new wheel design test. It probably is, people commented recently that the traditional Alpine wheel style looked dated.
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