What size tire using 15x6 wheel?

Fit perfect, basically the same height and width as before, just a 15 inch wheel.
It is slightly taller, probably due to the tread, seriously.

Judging by the clearances, uca, front and rear lower fender sections, I would guess a bigger diameter wheel would fit, but the offset would have to be larger and the height of the tire would probably have to be about the same.
Just a guess, those Barracuda fenders leave little room for steering.

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