Front end wobble - BMW Luxury Touring Community
 
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post #1 of 11 Old Apr 16th, 2008, 4:56 pm Thread Starter
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Unhappy Front end wobble

Does anyone know...

1. What exactly causes the front end to shake / wobble at certain speeds?

2. Is there anything to fix it?

I have an 03 LT with 30K miles on it. 8K on the Bridgestone BT 020's. Getting ready to replace the tires. Tire pressure ft = 42PSI Rear = 48 PSI. I am pretty good about checking it.

This "Wobble" is a major irritant. I have read of other complaints so it seems that I am not alone.

I owned an 85 K100RT for 17 years and a R100RT for 2 years and never noticed it on them.

Anything I can do?
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post #2 of 11 Old Apr 16th, 2008, 5:09 pm
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Re: Front end wobble

For me, boosting the pressure above 46 made a significant difference. I can tell when the tire is low when I get the shake. Possibly a "safety feature" built-in?!

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Kim Thomson
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post #3 of 11 Old Apr 16th, 2008, 6:03 pm
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Re: Front end wobble

the BT's always had the "wobble" and "cupping" on my 05... so, I am now running Metz... and they are running true and smooth.

There are numerous "causes"... could be bad shock absorber... could be loose or worn suspension components... (ball joint has been listed in the past).

Anyway, check everything for slack and smooth operation... and that may help your tires wear uniformly on the next set.

...............
J.M.J...
Dcn Channing

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post #4 of 11 Old Apr 16th, 2008, 6:03 pm
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Re: Front end wobble

you can check for two things:

Yes, low pressure will make your front end wobble, as will a worn tire. Something a dealership that went bankrupt always overlooked was the steering dampener. Easy to check and if you have a steering dampener problem you WILL experience severe shaking of the front, especially when braking hard.
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post #5 of 11 Old Apr 16th, 2008, 7:34 pm
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Re: Front end wobble

funny had the same problem at approx 8600 miles with bridgestones. changed front tire out due to cupping and wobble persisted inspected rear very closely noticed bubbling in tire. changed it also. blue rides even smoother than before. oh yeah I changed to metzlers extremely sat.
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post #6 of 11 Old Apr 16th, 2008, 8:47 pm
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Re: Front end wobble

My bike developed a bad head shake. Turned out to be the final drive bearing. The dealer said it had not been shimmed properly when it was replaced.

Mike in Pittsburgh

2000 K1200LT Canyon Red
1983 Honda GL650I Silverwing Interstate
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post #7 of 11 Old Apr 16th, 2008, 8:54 pm
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Re: Front end wobble

Quote:
Originally Posted by davek1
Does anyone know...

This "Wobble" is a major irritant. I have read of other complaints so it seems that I am not alone.

I owned an 85 K100RT for 17 years and a R100RT for 2 years and never noticed it on them.

Anything I can do?
If it is only there when you have both hands loose or off the bars it is most likely caused by some imperfection in the front or rear tire. I had the same thing and it took two front tires to make it go away but as the second tire wore it came back.

Best thing is don't let go of the bars with both hands. If you need to do that then stop the bike. I had become so complacent since I had "cured" my wobble I set the cruise and adjusted the cuff of my jacket. I almost didn't make it back to the bars in time. Every bike I have owned had a wobble at some certain speed, not all the same some lower speed some much higher.

When you have a few hours to kill just search this site for "wobble" there is plenty to read.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
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K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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post #8 of 11 Old Apr 16th, 2008, 8:56 pm
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Re: Front end wobble

+1 on the Metz...no wobble as compared the pretty bad wobble on the Stones when the tires near the end of life. Only got 7-8K on the Stones. Getting more than double the life out of the Metz.

2003 K1200LT Titan Silver - The Great Escape
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post #9 of 11 Old Apr 19th, 2008, 8:59 am
 
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Wink Re: Front end wobble

+1 on the Metz. My experience is that the BT 020s always caused the problem after about 4K. Metz 880s do the same after about 8K.

42-44 psi Front and 48-50 psi Rear minimize the effects and extend milage.

Changing out the rear today. It has 10, 500 mi on it. Changing out Front tire next week.

Many folks have different opinions...and they are much wiser than I...but, that is my 2 cents worth.

Enjoy your LT...possibly the best touring bike ever made!

v/r

Big AL
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post #10 of 11 Old Apr 19th, 2008, 9:27 am
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Re: Front end wobble

It sounds like I am the exception since I love my BT020s. Never had a problem with cupping, I replace the tires when the rubber gets thin and the indicators start showing up.
No problems with front wobble, and good grip in the twisties, the BTs work for me.
I never had issues with the Metz either, and I like the way they handle the freeway striations on the L.A. freeways. No wobbles there either.

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post #11 of 11 Old Apr 19th, 2008, 9:33 am
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Re: Front end wobble

My LT only wobbles at 30-40mph when I take my hands off the grips. And it REALLY wobbles.


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