rear tire imbalance


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fibersport
Posts: 77
Joined: Sun Sep 03, 2017 11:08 pm
Location: Valparaiso, IN
Motorcycle: 1990 Goldwing 1500
2002 Honda Shadow VLX Deluxe

rear tire imbalance

Post by fibersport » Tue May 14, 2019 6:08 am



I mounted a new set of Kenda's a little while ago, with the cold weather not wanting to leave, I've not had a chance to ride at all. I did take it out for a short ride a couple of weeks ago and noticed that I felt a vibration starting around 45 mph. I put 2 ounces of beads in the tire and made sure I aligned the colored dot with the valve stem. I should also say that the tire has two colored dots, I think one red and the other yellow. The front tire has only one, I aligned the dots of the same color with the valve stem for both tires. Last night I started the bike and put it in maybe 3rd or 4th while on the center stand and it ran smooth until I got up to about 2000 rpm which would probably be close to 45 mph and noticed the vibration came back, slower speeds had no vibration. I'm thinking that I need to rotate the tire to either the other colored dot or 180 degrees from where it's at right now. Any tire experts out there that have has a similar situation and is 2 ounces enough weight for the beads? I checked the Dynabead site and I think that's their recommendation for this size tire.



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bellboy40
Posts: 553
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Location: Brewton, AL
Motorcycle: 2000 GL1500SE Candy Spectra Red
1994 GL1500SE Pearl Bermuda Green

Re: rear tire imbalance

Post by bellboy40 » Tue May 14, 2019 7:30 am

Two ounces of the beads should be enough to balance it. That is what I put in mine and it is smooth as silk. It does sound like you have an unbalance problem with the tire though. Is the tire seated properly all the way around the rim?

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bellboy40
Posts: 553
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Location: Brewton, AL
Motorcycle: 2000 GL1500SE Candy Spectra Red
1994 GL1500SE Pearl Bermuda Green

Re: rear tire imbalance

Post by bellboy40 » Tue May 14, 2019 7:51 am

I think I misspoke on the amount of beads I have in my rear tire. I have 2 oz in front tire and 3 oz in the rear tire. It is possible you don't have enough beads in the tire. You could put some more beads in there and see if it fixes your imbalance. Having a few more than needed to balance the tire won't hurt anything.

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Elmobile
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Joined: Sat Aug 22, 2015 8:35 pm
Location: Bridgewater, Nova Scotia, Canada
Motorcycle: 1990 GL1500SE

Re: rear tire imbalance

Post by Elmobile » Tue May 14, 2019 9:10 am

Same as Bellboy: 2 oz in front, 3 oz in rear... Depending how for off balance the tire is 2 oz may not be enough!

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fibersport
Posts: 77
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Location: Valparaiso, IN
Motorcycle: 1990 Goldwing 1500
2002 Honda Shadow VLX Deluxe

Re: rear tire imbalance

Post by fibersport » Tue May 14, 2019 5:30 pm

I've been thinking what would be the easiest and what steps would be the most logical in solving this. Taking it somewhere would of course be the easiest but not the cheapest so here are my thoughts:

1. check to make sure the tire is fully seated, and verify that the tire is not out of round
2. add more beads
3. remove the beads and try it
3. rotate the tire to align the other dot
4. add the beads back (2 oz.)
5. add more beads (2+ oz.)
6. take it somewhere to have it balanced

Checking the tire is quick and easy, adding the beads is a pain but not too bad. Removing requires breaking the bead and a vacuum which might be able to be done on the bike, rotating it of course involves wheel removal. All this just in time of the weather getting nicer too.

Honestly I seem to have the worst luck with all sorts of tires and balancing, I'm fighting a wiggle in my car that comes and goes with cold temperatures which might be just a flat spot on the tire and my wife's SUV started having a slight vibration recently as well. Sometimes you just can't win.

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bellboy40
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Location: Brewton, AL
Motorcycle: 2000 GL1500SE Candy Spectra Red
1994 GL1500SE Pearl Bermuda Green

Re: rear tire imbalance

Post by bellboy40 » Tue May 14, 2019 5:55 pm

That looks like a good plan of action. I wish you the best of luck in getting the vibration out of your bike.

89 1500
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Motorcycle: 89, 1500 candy wineberry gone to another owner
92 Aspencade Cambridge blue

Re: rear tire imbalance

Post by 89 1500 » Tue May 14, 2019 7:35 pm

I balance mine first then add beads to maintain the balance. I'd pull the tire break it down to remove the beads and start over. I've been off a couple of inches with the reference mark in the past but the tire still balanced out, but if you have it down that far might as well get it right. Does the vibration go away at higher speed or constant from 45 up.

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fibersport
Posts: 77
Joined: Sun Sep 03, 2017 11:08 pm
Location: Valparaiso, IN
Motorcycle: 1990 Goldwing 1500
2002 Honda Shadow VLX Deluxe

Re: rear tire imbalance

Post by fibersport » Tue May 14, 2019 8:06 pm

Thanks for the well wishes and comments. I just did a real quick check on the tire being seated and it looks like it's all OK. I looked for the other colored dot and couldn't find it, maybe it was on the front or it was just too dark in the garage. I put it in gear and just let it idle, I did notice a slight flat spot on the tread just a little forward of the valve stem, without measuring it I would say it's maybe a sixteenth or so, not very much but enough that you could see it. My question now is how much of a flat spot is normal for a new tire? When I get more time, I'll get an accurate measurement and check the rim as well.



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