How do you determine which dirt bike tube size to buy? ?

Question

My tire is 120x80x18, but I can't find a tube in that size. How do you calculate the proper tube to buy?

Thanks

Answer 1

It should say 120x80x18 on the box for the tube. Ask someone at your local shop if you have trouble finding it. If you can't find it and you really want to ride, putting any size 18 inch tube would work on your bike, but you should be able to get the right size easy.

And you shouldnt listen to Auburn below me here. Any real motocrosser would know that a 120x80x18 is a back tire, and a pretty wide one at that.

Answer 2

Just go to a shop and ask for an 18 inch rear or front tube.  

Answer 3

idk?? just ask somebody at the store