tires

[kdx220r man]

I just wanted to know what the different numbers on tires means. For example 100/100 - 18
I know what the 18 stands for but I have no clue what the others do and I need some new tires so any help would be much appreciated. Thanks.

 

[Zerotact]

I believe the 100/100 mean it's 100mm wide, and stands 100 mm off the rim....

 

[kdx220r man]

so what would a good size tire be for woods riding If I have an size 18 rear rim??

 

[MikeT]

Yes, but not quite that exact meaning Zero. 100/100 means the tire is 100mm wide and 100% of the width measurement (which is 100mm) is how high the tire is. So for a 110/80, the width is 110mm wide and the height is roughly 80% of 110, which is 88mm tall. The second number is called the aspect ratio.