🎆 90 100 Vs 90 90

100/90-R19 tires are 1.29 inches (32.8 mm) smaller in diameter than 90/90-R21 tires and the speedometer difference is 4.7% With the oversized front rubber (90/100-21), you get a wider footprint and a tall sidewall. For the detail-oriented, this means that the first number in a 90/100-21 is the widest distance between the sidewalls of the tire in millimeters—90mm.
3350 posts · Joined 2009. #23 · Apr 18, 2021 (Edited) I used 90/100 Michelin Enduro tyres for years,but my 500 came with a Metzeler 90/90 front. It didn't give as much comfort as the 90/100's but was more accurate,could change lines faster and best of all I hardly ever lost the front end.
Stock is 80/100 (80mm wide, 100% of that the sidewall height or 80mm tall). I've run 80/100 and 90/90 (90mm wide, 81mm tall sidewall) so your tire would be 90mm wide and the sidewall would be 90mm tall..so taller, which will throw off your speedo, but I doubt it would hurt anything to ride it.
90 100 vs 90 90
100/90-R14 tires are 0.71 inches (18 mm) larger in diameter than 90/90-R14 tires and the speedometer difference is 3.4%.
77FbFk.