2012 Street Glide stability problem
Can you or anyone else please explain why you think the new frame design took care of majority of the wobble? My 09 SG still needed a stabilizer to rid that wallowing flat tire feeling, that wobble I still got in sweepers or grooved uneven road surfaces.
I'm new to HD Forums so bear with me.
I currently have a new '12 SG and have been experiencing some stability problems. The bike has approximatley 1600 miles on it.
The problem I've been experiencing only occurs at highway speed above 70 mph. At those speeds the bike sometimes feels like the rear end is in water and the bike itself feels wobbly.. I have to back off the throttle to let it settle down on its own. A friend riding with me noticed that at the higher speeds the rear tire didn't seem to rotate properly and kinda wobbled. At lower speeds it rotated properly and looked straight.
I have checked the tire pressure and that was good. I dropped the bike off at the dealership last night and was just looking for some answers in case they don't come up with anything.

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I'm new to HD Forums so bear with me.
I currently have a new '12 SG and have been experiencing some stability problems. The bike has approximatley 1600 miles on it.
The problem I've been experiencing only occurs at highway speed above 70 mph. At those speeds the bike sometimes feels like the rear end is in water and the bike itself feels wobbly.. I have to back off the throttle to let it settle down on its own. A friend riding with me noticed that at the higher speeds the rear tire didn't seem to rotate properly and kinda wobbled. At lower speeds it rotated properly and looked straight.
I have checked the tire pressure and that was good. I dropped the bike off at the dealership last night and was just looking for some answers in case they don't come up with anything.
I know grasping at straws....
Can you or anyone else please explain why you think the new frame design took care of majority of the wobble? My 09 SG still needed a stabilizer to rid that wallowing flat tire feeling, that wobble I still got in sweepers or grooved uneven road surfaces.
Last edited by wurk_truk; Jul 12, 2012 at 06:22 AM.
Thanks again
The Best of Harley-Davidson for Lifelong Riders
The weave / wiggle / wobble you feel is real, regardless of how many people haven't felt it.
These bikes are not all perfectly identical. The MoCo has some strange tolerances and things slip through the cracks. Trust your experience not these forum nerds.
You've checked some simple things, now move on to some bigger things.
What I felt as ***-end wiggle on highway sweeps was actually a tight steering head bearing. To check that, lift the bike so that the front end is clear, get any binding cables or gear outta the way and turn the bars all the way to one side then let go. The should smoothly roll to the opposite direction, then back to center, perhaps just past center and then to rest. Do this from the left and right. Mine barely just made it to center from the left and never to center from the right. I tore into the fairing and adjusted the bearing and viola, it handles SO much better. The manual even says that if it's too tight the bike will not be able to absorb a weave and if it's too loose it can develop a wobble.
So, now you did the drop-down test from the manual and it's perfect. Awesome, now strap that bike to your lift with the rear wheel hanging try putting significant, but not harmful, upward pressure on your drive belt. Does the swing-arm move horizontally? If so, that's a problem. I'd never heard of this test, but a builder buddy had a bike in his shop that they diagnosed in this way. You can also just manhandle the thing to see if there's is play. Inspect the swing arm mount and engine mount bushings for weird wear while she's in the air. If you suspect the swing-arm is moving horizontally, Progressive Suspension is selling a Tour-Link for the 2009-2012 models to address this exact issue. I got mine from directharparts.com for $50 less than MSRP. I'm still trying to decide whether to install it.
If it's under warranty and you trust your dealer, make them check this stuff out, why not?
The weave / wiggle / wobble you feel is real, regardless of how many people haven't felt it.
These bikes are not all perfectly identical. The MoCo has some strange tolerances and things slip through the cracks. Trust your experience not these forum nerds.
You've checked some simple things, now move on to some bigger things.
What I felt as ***-end wiggle on highway sweeps was actually a tight steering head bearing. To check that, lift the bike so that the front end is clear, get any binding cables or gear outta the way and turn the bars all the way to one side then let go. The should smoothly roll to the opposite direction, then back to center, perhaps just past center and then to rest. Do this from the left and right. Mine barely just made it to center from the left and never to center from the right. I tore into the fairing and adjusted the bearing and viola, it handles SO much better. The manual even says that if it's too tight the bike will not be able to absorb a weave and if it's too loose it can develop a wobble.
So, now you did the drop-down test from the manual and it's perfect. Awesome, now strap that bike to your lift with the rear wheel hanging try putting significant, but not harmful, upward pressure on your drive belt. Does the swing-arm move horizontally? If so, that's a problem. I'd never heard of this test, but a builder buddy had a bike in his shop that they diagnosed in this way. You can also just manhandle the thing to see if there's is play. Inspect the swing arm mount and engine mount bushings for weird wear while she's in the air. If you suspect the swing-arm is moving horizontally, Progressive Suspension is selling a Tour-Link for the 2009-2012 models to address this exact issue. I got mine from directharparts.com for $50 less than MSRP. I'm still trying to decide whether to install it.
If it's under warranty and you trust your dealer, make them check this stuff out, why not?
+1.....It can be solved. Theres no need to ride around feeling no trust in your ride...Frankly, if you pick apart all the suggestions you've received so far and touch on each one, you'll more than likely end up with a more stable bike than many folks on the forum..






