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Rear Wheel Wobble

I rode the bike over to Steve's tonight, he was the one who mounted the tires for me, to have another look at things. We found the rubber cushions inside of the sprocket holder were not as fully seated as I thought I placed them. After reseating them, we re-installed the wheel but sadly, it did not greatly improve the wobble; it did improve how the wheel sits in the swing arm though. Neither of us have a dial gauge to test the run out right now but I will look at picking up something at Harbor Freight (I found a gauge and mount for about $30).

I rode the bike home tonight and did not feel a large problem with it so I'll try to ride into work tomorrow. I also think I'll look at buying a new rear tire soon however.
 
I have skimmed this thread yet again, I'm pretty sure there is still no mention of whether or not the concentric cirlces on the tire are equidistant from the rim at all points. You know, the tiny circles put on both sides of the tire just so you can check if the tire is on the bead straight, all the way around the wheel. You have to take a few minutes, maybe a light and some reading glasses, and look carefully at the circles, all the way around both sides of each tire. If there are 4 1/2 circles visible, it should be the same 4 1/2 all the around, on both sides of the tire. Sometimes in cold weather it' difficult to get them popped on straight, all the way around, on both sides. Hence the circles.

It's just one of many things that can easily be skipped if you are in a hurry, or if someone else mounts your tires. Kind of like using the wrong size wheel bearings for the axle, or using leaky brake lines. I'm pretty sure GSX1000E wouldn't send his friend or his daugther out on a bike like this.
 
Steve is the one who mounted them and he has personally checked them three times in the last week - the tire is seated with the reference line even all around the tire
 
cowboyup3371 said:
Steve is the one who mounted them and he has personally checked them three times in the last week - the tire is seated with the reference line even all around the tire
Click to expand...

Have you checked them yourself with adequate lighting and adequate time?? If you have, I would suspect a tire that has been damaged before, maybe forced over a rim without the other side being down in the well properly, maybe it has been forced onto the wrong sized wheel.

I have seen this on my truck, new tire much worse out of round than yours, of course they put it on the rear right so I'd have the least chance of finding it. I found it.
 
tkent02 said:
Have you checked them yourself with adequate lighting and adequate time?? If you have, I would suspect a tire that has been damaged before, maybe forced over a rim without the other side being down in the well properly, maybe it has been forced onto the wrong sized wheel.

I have seen this on my truck, new tire much worse out of round than yours, of course they put it on the rear right so I'd have the least chance of finding it. I found it.
Click to expand...

I was standing over his shoulder as he shone the light around and pointed it out to me, all three times. I asked him three times just to cover that base.
 
Is it one of those junk Avon tires and the plies have separated? :confused: Have you (Steve) carefully inspected the wheel bearings to see if they were damaged upon installation?
 
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The tires are Shinko Tourmaster 230s bought two years ago and only have 1 season on them since the bike was torn down last summer. I also looked all three of the wheel bearings, two in the wheel one in the sprocket carrier, over (felt them too) when I reinstalled the wheels on the bike.

Today's ride to work went well with no wobbling felt during the ride and the only problem seen by my glasses fogging up (shield was great). I have a couple of good curves to take, a semi-sloping right hander at 50 and the other at 40 on a sharp downhill left on the way to work (right-hander obviously on the way back up). The bike handled both very well without any movement that I felt.

Like I said earlier, I'll get a new tire next month (have tags to pay on all vehicles this next weekend first) and will change out the bearings for good measure.
 
The outside wheel runout may not be the same as the inside where the tire seats. Check the inside while the tire is off. Probably isn't the problem but it can't hurt to check.

The chain binding idea was a good one.
 
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tkent02 said:
It's just one of many things that can easily be skipped if you are in a hurry, or if someone else mounts your tires. Kind of like using the wrong size wheel bearings for the axle, or using leaky brake lines. I'm pretty sure GSX1000E wouldn't send his friend or his daugther out on a bike like this.
Click to expand...

This one still gives me a warm feeling when I discovered it following purchase. :mad:
 
cowboyup3371 said:
Thanks Ed; I more or less did that yesterday and found the tire moved but not the wheel. How does a tire get out of round especially if it was used one year then sat in the garage the next while the bike was rebuilt? Could the weather changes affect the rubber enough to cause this?
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this.


A tire sitting for a year in the same position is bound to be disfigured and lose the perfectly round shape...
Did u move around or spin the tire at all in that year?
No expert, but even when storing a motorcycle over winter isnt it a rule to spin the tires every few weeks and not let them stay directly on cold concrete?

Maybe try to find another tire to put on ur rim and give it a try?
If the wobble goes away its the tire, if it does not it s something else.

just a tought
 
Weird. My 850 sat a couple years with no adverse effect upon the tires. The airbox boots however, did shrivel up. Just a few years old. Attributed to ethanol.

You didn't accidentally fill your tire with ethanol gas did you?
 
I'm glad you're getting a new tire. One suggestion I'd make...and this is based on not reading some replies...spin the wheel and see if the rim spins w/o a wobble. Then you can narrow it down to the tire and/or the marks on the rear wheel tensioner. Ride safe.


Ed
 
Dogma said:
Weird. My 850 sat a couple years with no adverse effect upon the tires. The airbox boots however, did shrivel up. Just a few years old. Attributed to ethanol.

You didn't accidentally fill your tire with ethanol gas did you?
Click to expand...

Nah....nitrogen:-\\\
 
cowboyup3371 said:
Thanks Ed; I more or less did that yesterday and found the tire moved but not the wheel. How does a tire get out of round especially if it was used one year then sat in the garage the next while the bike was rebuilt? Could the weather changes affect the rubber enough to cause this?
Click to expand...

Was the tyre fitted to the bike while in the garage, or was it off the bike? reason for asking if left under inflated and fitted to the bike for a long period of time on the side stand, could have deformed your tyre a little, as you mention best way would to be to replace it for piece of mind. ( just noticed Rops had beat me to it) sure you'll get it sorted.
 
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Chris G said:
Was the tyre fitted to the bike while in the garage, or was it off the bike? reason for asking if left under inflated and fitted to the bike for a long period of time on the side stand, could have deformed your tyre a little, as you mention best way would to be to replace it for piece of mind. ( just noticed Rops had beat me to it) sure you'll get it sorted.
Click to expand...

Good point about being on the side stand. Long-term, my bikes have always been on the center stand. Mainly that was because they take up a little less space that way. And my garage floor is smooth enough that I can slide them around when on the center stand. But it does take most of the load off the tires. So that's a possible difference between my 850 sitting a couple years with no (tire) problems, and other bikes possibly taking on a permanent deformation in the tire after spending an extended time on the side stand.
 
Took it out to Iron Pony today and they said the wheel wasn't properly balanced (thanks Williams Vintage :(). They re-balanced it and I'm going to put it back on tomorrow to test. If it works then great; if not, they said to bring it back and they'll put a new tire on it.
 
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