tire bounce

[cosmo]

Vibration at speed made me check front PR3. Appears to be a low spot in the circumference causing it to feel out of balance. Any suggestions or experience?

 

[ionbeam]

New tire? Mileage? Who installed the tire? Where did the tire come from?

If the tire is new, contact the seller. If you bought the tire from a dealer and had them install it, contact the dealer.

Check the bead line on the sidewall and make sure that it is equally exposed on both sides of the tire and the same space from the rim all the way around.

If the tire is old, just replace it.

If the motorcycle has been sitting for weeks and the tire is very cold it may have a temporary flat spot. Once the tire comes up to temperature the flat spot will go away.

If the tire is middle age and you absolutely don't have the money to replace it, this may be the only time I would ever suggest trying tire balancing beads. Even if this balances the tire, IMO, it's not a good thing to have an out of round front tire.

 

[Intech]

I got nothing else. Alan pretty well covered it for you. Had to look up where Millboro is. Knew it was familiar as we ride through that area all the time!

 

[Intech]

BTW - I have a tire changer and balance. Just PM if you want to hook up and change a tire. I will be out of town all this coming week, though.

 

[Pterodactyl]

Yup, Alan sucked the air right out of this thread. Pretty much gave all the good stuff.

 

[Old Guy]

Yup, Alan sucked the air right out of this thread. Pretty much gave all the good stuff.

Except balancing beads will only exacerbate (do I get points for using "exacerbate" in a sentence?) the problem if it's out of round. They will not fix and out of round tire.

An easy way to check for out of round would be jack the front end up so that the front tire is as close to the floor as possible without touching, then turn it and watch the space between the floor and tire. Maybe that's how you already determined the flat spot, so .........

If possible, break the bead and reset it. Maybe it just didn't seat well.

 

[cosmo]

Thanks, will check the bead. Installed myself, took the tire off and balance was good. That's when I found the low spot, had ridden previous day. 12th set of PRs, Had a similar problem w/ last one but chalked it to a bad wheel(replaced, final repair since "totaled" late '13)

INTECH, Douthat Park Rd. actually. 9 miles either way to first intersection. Road made for 2 wheels, after 8 times the globe on this road found my FJ, now 2 more. Fine ridin' all up & down these mtns., little traffic, no commerce, minimum population, yep, my PRs wear on the sides.

 

[escapefjrtist]

If you're absolutely positively sure it's the tire, then ionbeam gave you a lot of items to check.

Another item to consider is the fork rebound dampening. As a quick test, I'd firm up the rebound dampening to 4-6 clicks from full hard and see if there's any improvement. Too little rebound dampening will give you a bouncy / jiggly ride.

Good luck!

--G

 

[stealth1]

Check the bead line on the sidewall and make sure that it is equally exposed on both sides of the tire and the same space from the rim all the way around.

That's my best guess. Bead not seated. Might pop into place.

 

[stealth1]

Yup, Alan sucked the air right out of this thread. Pretty much gave all the good stuff.

Except balancing beads will only exacerbate (do I get points for using "exacerbate" in a sentence?) the problem if it's out of round. They will not fix and out of round tire.

If you keep exacerbating you'll go blind Ed.