Hey is that a front or rear 120/80 14 tire you have on rear? Because I can't find 120/80 14" rear tires anywhere.....
no. you wont really be running near the edge of the tire. Size doesnt seem to bother them either. Also you wont be able to get much lean angle because of the height of the bike. Although the 80 gives up some displacement to the 100... its still competitive. The 80 trans has a slightly better ratio.