Even though Pirelli calls it a "190" it actually measures 180mm, and has similar clearance to the 180/55. I raised the pressure ~4 lbs. over the stiffer (from what I consider decent for heavy bikes) Dunlops, front and rear to compensate for the soft construction.famo said:I like the look of the Trail but was worried about the size, 190/55, what do you mean by "measured out 180mm" ? But since you've mounted them, I figure I can! Any more comments on your tire pressure?