Registered Forum User
Big Twin
Posts: 1,420
Join Date: Apr 2004
Location: Nelson, Lancashire
I think if perhaps the 190 is fitted to a 5.5 rim instead of a 6 it is more pinched for want of a better word and probably then a larger diameter/radius.
A 180/55 is about 99 mm tall and a 190/50 is about 95mm tall meaning the 190 (on the correct rim) should be about 4mm further from the exhaust?