I did'nt like the 020's that came with the bike. 10,000 miles. I got my new 002's. I broke them in at 41psi. Still at 41. I rode them Hard today. They stick like glue. I Love them.
Go with the 180. What kind of tires you running? I had Bridgestone BT020. Got new BT002's. I Love them. On the race track, 600cc bikes run a 180, some times a 190.