tire question

[maja7904]

when i bought my bike, luckily the kid had thrown in a set of new tries. The set on bike currently running are... front 80/100 rear 100/90.... The new tires are front 90/90 rear 110/90.
. I'm pretty sure i can run the new rear tire as it just has a bigger sidewall correct? Front tire im not sure if it will fit rim. Have yet to try and was hoping to get some info from some more knowledgable people.

 

[Matt90GT]

what bike?

Front rims for all full size bikes are 1.6 width. So the 80/100 or 90/90s will work fine

For 125/250f bikes they use a 1.85 rear rim which runs the 100 size rear.

The 250/450f bikes use the 2.15 rear rim for the 110 size tire. If you run a 110 on the smaller rim you will have more roll over thus feeling like a flat at lower air pressures.

 

[maja7904]

right i forgot to post yz 125 2001...

 

[_JOE_]

Right, the 110 is wider than the 100.