Can jumping with an old 88 yamaha 200 bend the left tire in after a while? i land straigh each time. any other posiblilities of why it is bent?

 

How high do you jump it? Welcome to the fourms.

 

Do you ride in rough ground with rocks and things because you could have hit a rock and bent it.

 

Is it the wheel or the axle that's bent? From reading your description it sounds like your axle is what's tweaked. You can have it straightened back out, or you go buy a new and stronger-than-stock one. Even landing straight, you can still tweak the axle. I know it may feel like your landing straight and all that but a single wheel could be taking the brunt of the force. If it's just the wheel that's bent (usually you can see marks on the beads if it is) then go get another wheel. Also, you didn't say whether it was a front or rear wheel, and exactly why do you think it's bent? Can you post a photo somewhere?

 

welcome to the forums.