Author Topic: Front end shake after replacing front tire  (Read 1282 times)

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Offline gpd323

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Re: Front end shake after replacing front tire
« Reply #25 on: March 08, 2019, 10:59:40 pm »
Well it looks like I'll be installing the new Spirits for the May trip to Northern CA. Its going to be a 7 day 3500+ mile trip and the used Dunlops with 2500 miles I cannot take a chance on making it. So if I do get a head shake with the new Avon's I will be sure to post.
Greg Downing
Beautiful Downtown Spanaway
Washington State

Ride while you can.

Offline Red Fox

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Re: Front end shake after replacing front tire
« Reply #26 on: March 11, 2019, 06:34:43 pm »
Well it looks like I'll be installing the new Spirits ... So if I do get a head shake with the new Avon's I will be sure to post.

Nice.  Your evaluation of grip and longevity will be looked for also. 
TryCities, WA.    2011  C-14, silver; 53,000 miles.

Offline RoadKillHeaven

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Re: Front end shake after replacing front tire
« Reply #27 on: March 21, 2019, 11:49:21 pm »
Two Shinko F016 and still had shimmy. Replaced it with BT016. My bike is good ol' itself again. No snimmy, smooth as tranquil sea.

P.S. After reading all there was available ONLINE about front end shimmy. I know now with 100% certainty that majority of posters know exactly square root of diddly squat.
 And like Napoleon Bonaparte once said, "If you want something done right, do it yourself. "

Good luck and Good night..


Offline gpd323

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Re: Front end shake after replacing front tire
« Reply #28 on: March 23, 2019, 03:05:33 pm »
So we can assume that the C14 does not like certain tires after all. Not always to blame the steering head bearings. I have gone from smooth sailing to significant head shake and then back again to smooth just by using different brands of tires. I'll let you know what I find put when I get the new set of Avon Spirits installed in late April or early May.  :beerchug:
Greg Downing
Beautiful Downtown Spanaway
Washington State

Ride while you can.

Offline RoadKillHeaven

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Re: Front end shake after replacing front tire
« Reply #29 on: March 25, 2019, 12:15:29 pm »
I don't know about other tires. But two Shinko F016 front tires exhibited the same flat spot resulting in 40mph -60mph and above legal speeds vibration/shimmy. It was beyond annoying. It had sapped joy out of riding.
Said vibration/shimmy were present at all times, not just during deceleration. More so after tire warmed up. 
Techs who re-balanced front  tires using fancy tire balancers assured me that small radial run out is OK. I made him watch Shinko spin on tire balancer and measured run-out. And after BT016 was mounted I showed him how much radial runout it had. BT016 had ZERO run out, compared to second Shinko F016 that exhibited >1/8" of run out.

Now I know that motorcycle tire must NOT have radial runout (virtually indiscernible) to be shimmy free.

Good luck and Good night...
« Last Edit: March 25, 2019, 12:18:43 pm by RoadKillHeaven »

Offline gpd323

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Re: Front end shake after replacing front tire
« Reply #30 on: April 29, 2019, 09:22:27 pm »
Installed the new AVON Spirits today. Won't be able to get a warm up ride in until tomorrow. I hope the head-shake does not appear gain like it did with the 3DXM's.

I had 2800 miles on the Road Smarts 3's I just took off. I might have gotten another 1000 miles but thats about it. They were near the wear bars on the front already.
Greg Downing
Beautiful Downtown Spanaway
Washington State

Ride while you can.

Offline Jim Snyder

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Re: Front end shake after replacing front tire
« Reply #31 on: April 30, 2019, 12:58:50 am »
I have the new Avon Spirits on my FJR and they are smooth as glass. Of course I have all of my tires spin balanced after I install them so no shake or shimmy here.
"Some days you're the windshield, and some days you're the bug" Get used to it cause thats life !!!

Offline gpd323

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Re: Front end shake after replacing front tire
« Reply #32 on: April 30, 2019, 07:13:32 pm »
Not a hint of head-shake with the new AVON Spirits, zero, nada!

If I can get some decent miles on them I'll be back to the AVON brand.

Trip into Oregon and Northern CA starts the 8th of May.
Greg Downing
Beautiful Downtown Spanaway
Washington State

Ride while you can.

Offline smithr1

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Re: Front end shake after replacing front tire
« Reply #33 on: May 01, 2019, 03:47:05 pm »
Not defending but on three C10s and now a C14 I have run a lot of tires.  The majority Avon in all past styles.  All bikes would head shake sometimes.   I think the bike is just very close to it and it just does not take much for it to start.   My solution is... don't let go.  That always works.  And yes tightening the bearing seem to help and I had other brands shake.  It is a mystery and the only sure fix it... don't let go.
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Offline gpd323

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Re: Front end shake after replacing front tire
« Reply #34 on: May 11, 2019, 12:06:10 am »
update: 3 days done, 1600 miles currently in Willits CA. 3 more days to go. Handling has been excellent, the Spirit ST's seem to absorb sharp bumps very well, no sharp impact feeling in the bars.

Huge lean angles and no slipping or weird handling feelings.

If this continues I'll be buying the Spirit ST's again.

Hope the mileage is there, but if I get this trip home with tread left over I'll be happy with that.
Greg Downing
Beautiful Downtown Spanaway
Washington State

Ride while you can.

Offline gpd323

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Re: Front end shake after replacing front tire
« Reply #35 on: May 14, 2019, 05:59:29 pm »
2700 total miles, the front looks like its wearing well, the rear is heavily scalloped from accelerating out of the corners, but thats happened to all my different brand of tires used in the past.

I may put another 1000 or so on them but install a new set when the next long trip comes up.

Greg Downing
Beautiful Downtown Spanaway
Washington State

Ride while you can.