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In the context of motorcycle tires, a 120 rear tire is generally wider than a 110, offering more traction, especially on dry, hard tracks, but potentially impacting cornering and rut control.
The numbers in motorcycle tire sizes (like 110/90-19 or 120/80-19) indicate the tire's width in millimeters (110 or 120) and the aspect ratio (the height as a percentage of the width).
A 120 tire will have a wider contact patch, leading to more traction in a straight line, but it can also make the bike feel less agile in corners and potentially make the bike stand up more in ruts.
Some riders prefer 110 rear tires for improved cornering, roll-over smoothness, and better control in ruts, even though a 120 offers more straight-line traction.
The larger carcass of a 120 tire can make its cross-section less round and more squarish, potentially affecting handling.
The best choice depends on riding style, terrain, and personal preference. If you focus on starts and straight-line speed, a 120 might be preferred. If you prioritize cornering and rut control, a 110 might be better.
Keep in mind that tire sizes can vary between manufacturers, so a 120 from one brand might be different from a 120 from another.
It'll definitely spin easier on top end instead of wheelieing. That being said I go back and forth on a 450. 110 more flickable, more forgiving of over throttle( in a way) when it spins instead of lifting a wheelie in all gears. If u want hit and maximum lurch a 110 ain't it.
I think a 110 turns better, but sometimes has a bit less traction. I just took a 120 off my Husky and spooned on a 110 fwiw.
I tested the feel from each, back to back on the same day, when I worked for Pirelli. I choose 110 for the lighter feel in the air and overall quicker motions from the bike. The rotating mass in the air from each was extremely noticeable. On a 450, I think you need all of the above and as much as you can get.
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