Front wobble New Avons. - BMW Luxury Touring Community
 
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post #1 of 12 Old May 10th, 2007, 2:41 pm Thread Starter
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Front wobble New Avons.

Suggestions would be apperciated.
I just put on a new set of Avons. The first ride today on them, I notice a wobble or I should say they just did not feel right.
If you let off the gas the front wobbles more and if you let the handles bars go free it would really shake;
I was planning on leaving for CA,Sunday to get my Russell seat but these tires or whatever the problem, it would not be a good idea.
Thanks
Ken
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post #2 of 12 Old May 10th, 2007, 2:47 pm
 
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Here is my 2 cents:

1.The wheel wasn't balanced properly.

2.When the axle pinch bolts were tightened, they failed to compress the front suspension a few times prior to tightening.

3.You have a defective tire.

Could be one or all three. GL
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post #3 of 12 Old May 10th, 2007, 2:57 pm
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That is a good list of causes. I had a new tire that was slightly out of round and had a wobble. The next new tire was true and no wobble.

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post #4 of 12 Old May 10th, 2007, 3:56 pm
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Also, a lot of front end wobbles start at the rear. Start by checking your rear wheel torques.



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post #5 of 12 Old May 10th, 2007, 4:56 pm Thread Starter
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Ok will do; check the rear first that is.
I thought the Avons would be an improvement (: I suspect I got that wrong.
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post #6 of 12 Old May 10th, 2007, 5:34 pm
 
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I just put a 55 (Storm) on my 2000 and no wobble. Definite improvement over the BT020.
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post #7 of 12 Old May 10th, 2007, 7:56 pm
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witch avons did you u put on [storms]. I put on storms my 06 and no wobble
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post #8 of 12 Old May 10th, 2007, 8:19 pm
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If you had them mounted at a dealer take off the tire and have them check the balance again. Make sure it's balanced with cap on the valve especially if you have pressure indicators on the valves or metal/speciality valve caps.. and spin the wheel slowly and watch the run of the tire and view it from all angles against a white background to make sure the tire is seated properly.. both front and back. Look for bubbles and pops anywhere on the tire.

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post #9 of 12 Old May 10th, 2007, 8:22 pm
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Quote:
Originally Posted by humplatch
Here is my 2 cents:

1.The wheel wasn't balanced properly.

2.When the axle pinch bolts were tightened, they failed to compress the front suspension a few times prior to tightening.

3.You have a defective tire.

Could be one or all three. GL
and a highly improbable number four but still important:

... if I remember correctly the front axle nut should be torqued to 30 nm.... a very low value. This is commonly WAY over torqued!! (since vee don't want zat puppy coming loose vee must tighten it like Arnold vould... )

I doubt if this is the culprit in this situation - but it is something that needs to be checked carefully as most "consumer" torque wrenches - even high quality ones - do not read accurately at the bottom end of the scale.

The more I am around all of these exotic squeeze castings the more I realize how important torque values are.


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post #10 of 12 Old May 10th, 2007, 9:43 pm
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I agree with Mr. Ron...

Also check for runout... with the front wheel off the ground, there should be no "discernable" movement left-right or up/down. Same for the rear.

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post #11 of 12 Old May 11th, 2007, 6:45 am
 
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no more wobble

I had a wobble at around 40mph and got real bad if I just had one hand on the bars. I had 880's put on yesterday and got rid of the BT020's. Guess what, no more wobble.
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post #12 of 12 Old May 11th, 2007, 7:03 am
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Of course, the rear Avon will wiggle like a belly dancer till you get some miles under it. I bet that's what you're feeling.



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