Both the 245/45-17 V710 and 245/40-17 A6 fit on both the wheels and fenders just fine.
There was a little bit of minor rubbing with the taller Kumho's on the inner fender well, but it was not noticeable when driving the car. There are marks/wear, so I know it was happening though.
They did not get worse after we switched to Hoosier, so I assume the shorter Hoosier did not rub at all.
I also never used spacers, so perhaps using 5mm spacers with the 45mm offset wheel would have prevented that minor rubbing.
~Sam Karp~
1994 Mazda Miata R, ES
SCCA-Milwaukee