Page 1 of 4 123 ... LastLast
Results 1 to 10 of 40

Thread: Front tire wobbling on 35 mph?

  1. #1
    Senior Member Front tire wobbling on 35 mph? Afan's Avatar
    Bike: 2013 NC700X DCT
    Join Date
    Sep 2016
    Location
    Iowa
    Posts
    354

    Front tire wobbling on 35 mph?

    After the local bike shop changed my front tire, it started wobbling when I let go of the handlebar. But only around 35 mph. Faster or slower it doesn't or just a little bit.
    Is that the sign that the tire was not balanced correctly, or something else?

    Also, if I let go of the handlebar, to keep the bike going straight I have to "move" my body a bit to the right side, like "counter balance". Does it have anything with the tire or... something else?

    Thanks for any help.
    Instead million dollars, give me million miles!

  2. #2
    Senior Member Front tire wobbling on 35 mph? dduelin's Avatar
    Bike: NC700XD, ST1300, Elite 80
    Join Date
    Jul 2012
    Location
    North FL USA
    Posts
    3,957
    A hands-off front fork wobble at 30-45 mph is often traced to the front tire being slightly out of round or irregularly worn but because the tire is new and you mention the bike wants to turn I would try and loosen up the fittings that hold the front wheel and let the forks align themselves.

    Loosen the 6 bolts that hold the front fender in the forks and the pinch bolt on the lower left fork leg. Get on the bike with both wheels on the ground (not on center stand). With the engine in neutral hold the front brake and bounce the forks up and down a few times to compress and extend the forks then tighten every thing back up in reverse order starting with the pinch bolt.

    If this doesn't remove or greatly reduce the wobble I'd be taking the bike back to the dealer that sold you the tire. They may tell you "don't take your hands off the bars" but persevere for a replacement tire.
    Dave

    GL1800
    NC700XD




  3. #3
    Senior Member
    Bike: 2013 NC700X
    Join Date
    Apr 2019
    Location
    Northeast Alabama
    Posts
    750
    Quote Originally Posted by dduelin View Post
    A hands-off front fork wobble at 30-45 mph is often traced to the front tire being slightly out of round or irregularly worn but because the tire is new and you mention the bike wants to turn I would try and loosen up the fittings that hold the front wheel and let the forks align themselves.

    Loosen the 6 bolts that hold the front fender in the forks and the pinch bolt on the lower left fork leg. Get on the bike with both wheels on the ground (not on center stand). With the engine in neutral hold the front brake and bounce the forks up and down a few times to compress and extend the forks then tighten every thing back up in reverse order starting with the pinch bolt.

    If this doesn't remove or greatly reduce the wobble I'd be taking the bike back to the dealer that sold you the tire. They may tell you "don't take your hands off the bars" but persevere for a replacement tire.
    And if they don't want to help, tell them that's the last of your business they will get.

    Does it vibrate or shake at interstate speeds? Also what tire /size are you running, both front/back?

    Sent from my SM-G930V using Tapatalk

  4. #4
    Super Moderator
    Bike: NC700x, ST1300, XR250L, CX500 Turbo, TRX350fwd, CT90, C70, TRX250, TRX 500, VFR1200x
    Join Date
    Dec 2012
    Location
    Wausau WI
    Posts
    1,831
    On related condition...........on off the bars decel handle bar shake is common on many bikes. There dozens of articles on the topic of decel handlebar shake. It is so common many riders do not know it exists until attempt zip there jacket while underway at speed. The commonality is it take hands off the bars to get the condition. Some bikes it takes hands off the bars and bump to the suspension to get the oscillation to start.

    Things that come up often:

    1. The rider is part of the damping system, the slightest pressure on the bars makes the shake disappear or dampen.
    2. Weight distribution, large rear carrier weight can effect the condition.
    3. Steering head bearing adjustment or wear can play a part.
    4. Swing arm pivot and bearing.
    5. Suspension adjustment or setting can play a part.
    6. The answer is often comes down to do not let go of the bars.

    New front tire on my VFR1200x does the 40mph constant speed hands off shake just a little bit. Lower and higher speeds are also not effected. The tire is balanced. I was curious if I could change the condition or speed.

    1. Rebalanced the tire
    2. Moved the tire on the rim 180* and rebalanced
    3. Removed all the balanced weights
    4. Checked the steering head
    5. Changed the suspension settings
    All had no real effect or change. Mine is so small I will not bother to get the manufacture involved. Not to mention the real answer is (as mentioned) ......don’t let go of the bars.

    Mine is DIY tire install so going back to the dealer is not an option. Selling tire dealer, not an option because of the hassle and the issue is very small. Mine has a friction throttle, with out the friction throttle device there no way the rider could replicate the constant speed with hands off.

  5. #5
    Senior Member Front tire wobbling on 35 mph? Afan's Avatar
    Bike: 2013 NC700X DCT
    Join Date
    Sep 2016
    Location
    Iowa
    Posts
    354
    Quote Originally Posted by dduelin View Post
    A hands-off front fork wobble at 30-45 mph is often traced to the front tire being slightly out of round or irregularly worn but because the tire is new and you mention the bike wants to turn I would try and loosen up the fittings that hold the front wheel and let the forks align themselves.

    Loosen the 6 bolts that hold the front fender in the forks and the pinch bolt on the lower left fork leg. Get on the bike with both wheels on the ground (not on center stand). With the engine in neutral hold the front brake and bounce the forks up and down a few times to compress and extend the forks then tighten every thing back up in reverse order starting with the pinch bolt.

    If this doesn't remove or greatly reduce the wobble I'd be taking the bike back to the dealer that sold you the tire. They may tell you "don't take your hands off the bars" but persevere for a replacement tire.
    I did it and didn't see any improvements.
    Here is the video how it looks. Because if the camera angle it doesn't look like it's a lot of wobbling. But, actually, it's a bit worse than it looks like.
    I'll try to upload video to Google Drive, so you can see it better.

    I bought the tire online, from americanmototire.com. And the local bike shop installed it. Should I first go to the shop, they can check and confirm the tire is off? Anybody has an experience with the returning a tire?
    Instead million dollars, give me million miles!

  6. #6
    Senior Member Front tire wobbling on 35 mph? Afan's Avatar
    Bike: 2013 NC700X DCT
    Join Date
    Sep 2016
    Location
    Iowa
    Posts
    354
    Quote Originally Posted by TacomaJD View Post
    ... Does it vibrate or shake at interstate speeds? Also what tire /size are you running, both front/back?
    No, it doesn't. It's Shinko 705, 120/70R-17 58H Front and 150/70R-17 69H Rear.
    Instead million dollars, give me million miles!

  7. #7
    Senior Member Front tire wobbling on 35 mph? Afan's Avatar
    Bike: 2013 NC700X DCT
    Join Date
    Sep 2016
    Location
    Iowa
    Posts
    354
    Quote Originally Posted by showkey View Post
    On related condition...........on off the bars decel handle bar shake is common on many bikes. There dozens of articles on the topic of decel handlebar shake...
    It could be, but I never experienced it before (although I ride just 7 years only and had only 3 bikes) except when my front tire was cupping.


    Quote Originally Posted by showkey View Post
    ... Mine is so small I will not bother to get the manufacture involved...
    Mine is not small. Not tank-slapper, but enough big it bothers me. Would it one day start to wobble on all speeds between 30 and 40 mph? And riding off road 35 mph with wobbly handlebar - not fun at all.


    Quote Originally Posted by showkey View Post
    ... Not to mention the real answer is (as mentioned) ......don’t let go of the bars...
    That's the real answer? Take the pain killer and your back is not going to bother you... Sorry but I don't accept that as an answer.
    Instead million dollars, give me million miles!

  8. #8
    Senior Member Front tire wobbling on 35 mph? Afan's Avatar
    Bike: 2013 NC700X DCT
    Join Date
    Sep 2016
    Location
    Iowa
    Posts
    354
    This is the video it shows have to move my body to the right to keep the bike going straight.
    Instead million dollars, give me million miles!

  9. #9
    Super Moderator
    Bike: NC700x, ST1300, XR250L, CX500 Turbo, TRX350fwd, CT90, C70, TRX250, TRX 500, VFR1200x
    Join Date
    Dec 2012
    Location
    Wausau WI
    Posts
    1,831
    Quote Originally Posted by Afan View Post
    That's the real answer? Take the pain killer and your back is not going to bother you... Sorry but I don't accept that as an answer.

    Have the dealer install the old tire, see what happens .........you would not be the first person to discover the old tire did the same hands off shake.........you just didn’t notice it.

    Also once it’s found or noticed ...........it’s almost impossible to forget or accept.

    One installation check, view the line around the tire where it meets the rim.......is the tire fully seated on rim and even gap on the line on the tire.

    Since you did not buy the tire at the installing shop.............that puts the shop is very tough position. It will be interesting to see their response. Same with the online seller. It’s also the obvious reason shop often refuse to install customer supplied tires.

    Cycle world article on the topic

    Why Do Motorcycles Wobble And Weave? | Cycle World


    In my case my old tire is gone.
    I suspect mine is being caused by the new tire.
    I will admit I never noticed the shake with the old tire ( it was worn and feathered ) ........but........I never really did much hands off the bars.
    Last edited by showkey; 14th September 2019 at 19:44.

  10. #10
    Senior Member Rapturee's Avatar
    Bike: 2012 NC700x
    Join Date
    Feb 2018
    Location
    Post Falls IDAHO
    Posts
    1,417
    Afan, may i ask how much weight they used to balance that tire if any? I have the identical tire on my front and have no wobble at any speed cruising/decelerating. Hmm... perplexing it is. (my thought was to try removing the weight used and run it without any balance weight(then reinstall the weight if necessary). :{P
    Fiat Justicia et Peret Mundus = Do the Right thing, Come what May!

Similar Threads

  1. 3rd front tire
    By Don in forum Tire Tech Talk
    Replies: 3
    Last Post: 24th August 2017, 11:11
  2. New Front Tire
    By SergeantChuck in forum Tire Tech Talk
    Replies: 13
    Last Post: 23rd June 2017, 09:16
  3. Battlax T30 front tire
    By oldmanaz in forum Tire Tech Talk
    Replies: 4
    Last Post: 20th March 2017, 16:10
  4. ever try a 110/80x17 front tire?
    By mtiberio in forum Tire Tech Talk
    Replies: 7
    Last Post: 6th October 2016, 13:26
  5. Front tire
    By mcbridedl in forum NC700 Technical
    Replies: 13
    Last Post: 3rd July 2013, 19:35

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •