Lets see here, I replace a lot of tires.
Vmax started with the Shinko's Verge 120/18 fnt and the Stealth 180/18 rear. No complaints. Actually got caught in the worst thunderstorm ever on the Vmax with the worn out Stealth on the rear and had traction. Go Figure. Got 2000 miles out of the rear stealth and 4000 miles out of the Verge front.
Avon Cobras are my go to tire, have a 130/18 up front and the 180/18 rear. The big front tire slowed the steering a little, maybe, but really nothing compared to a stock bike.(Stock bike is like steering a truck with manual steering) I had a good left over tire from my Victory Cross Rds (130/18) that would not make my planned 3500 mile Colorado trip, so instead of throwing it away. I spooned it onto the Vmax for grins. I got 2000 or so miles out of it. (Perfect tire management) I guess I like the 130 up front, I bought a new one for the bike. Warning it's H rated max 130!! These tires stick like glue wet or dry. I should get close to 8000 miles out of the front tire. The rear, I am lucky to get 3000 miles. Going to try a Bridgestone G 850 for grins this next time. The Bridgestone is $50 cheaper that the Cobra.
On the Victory i have had Avon Cobras(my favorite), Metzler 880(won't buy again), 888(pretty good tire), and Dunlop Elite 3's. Currently I run the Avon front with the Dunlop rear. Good wet and dry handling and the best mileage of all the tires. Should get about 8000 miles front and about 5000 miles rear.