I noticed that my front tire is cupped. What could be the possible causes of this. I am running a 21" front wheel on a 07 srteetglide, its time to change the tire i was just wondering if it is normal or is there something else causing it to cup (wheel bearings maybe) any help would be appreciated. thanks

 

Bad shocks on a car will cause this, I'm not sure about a bike but it would be worth the check!

Good luck!

 

The main cause of cupping on a bike front tire is under inflation.
Pressure should be checked at least once every 2-3 weeks.

 

on my 21" sporty front (back when I had her) it could drop from the 38 I tried to run all the time down to 20 and I would not feel any handling differences... so definitely be checking it out every few weeks at the worst.

 

Bad balance can cause that.

 

:icon_imnotwor thy: Yeah that is usually the cause.

 

Hmm.. interesting point.

I had a new front tire put on late last year, only have about 4k on it and now I have some cupping going on. At the time of the new tire install I told the H-D techs that she's pulling to the left and they told me that it was my load. It was not and is not my load.

So, how does one correct the issue of pulling to the left, or right for that matter?

Thanks,
Whiskers

 

X 3 on the inflation, definitely affects the tire wear

 

Another vote for under inflation. Buy a good gauge..... don't use the stick type. They are about as accurate as just kicking your tire.

 

there was a thread posted on here a while back that might help you. Try searching for "drifting left: HELP". hope this helps you out