I didn't say heavier, I said bigger. If you've never looked at the 180/60's they are freaking huge. I have a set of 180/60 Supercorsa SC's for my monster and they dwarf a 190/55. And yes they are heavier but faster.
The turn in on the 60s does really feel like your falling...it make the 55 feel lazy in comparison...but where the 60 falls the 55 just wants to keep rolling over..the 180/60 was standard issue on my 2015 m821...allowed the use of the same traction control program as the bigger tire bikes because the circumference was the same...next gen use the 180/55...big fan of the 60...been waiting for these all year