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Stock Front Tire Out Of Balance/Round


Fog Man
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On first ride from dealer Friday October 23, 2020 I noticed the front tire has a balance wobble (bounce almost) from ~38MPH thru 50MPH. Above 50MPH there is a whirring sound and slightly intolerable higher frequency vibration felt through frame, bars, et cetera.

My research so far only produced that the 2021 T7 comes with a spoke weight opposite the valve stem. I removed the weight rode again, and experienced no change in vibration pattern.

Dealer balanced on a machine, placing weights back into the same factory setting. Followed by claim that this is how the stock tire performs... "this is normal ADV knobby tire vibration."

 

Thoughts? Help?

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If you haven’t seen this thread yet, it might give you some ideas to try. An out of balance or out of round tire might be the culprit. 

 

 

 

"Men do not quit playing because they grow old, they grow old because they quit playing" Oliver Wendell Holmes - Mods - HDB handguards, Camel-ADV Gut guard, 1 finger clutch, The Fix pedal & Rally pipe, RR side/tail rack, RR 90nm spring & Headlight guard, Rally seat, OEM heated grips- stablemate Beta 520RS

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Whirring sound is probably road noise from the tyres and is normal.

When you are cruising pull the clutch and let the engine fall to idle speed. Then you will get a proper feel for any vibration that is actually coming through the wheels.

There is engine vibration from about 4 or 5 thousand RPM which is normal and that may be what you are feeling.

When I pull the clutch in on my completely standard T7 it rolls very smoothly at high speed.

 

Also are your suspension settings standard? Perhaps they need adjusting for your weight.

If you crank up the rear preload but don't have sufficient weight it will cause the steering to be lighter/twitchier and more likely to wobble at speed.

There is a tonne of information on setting sag on bikes so that is worth looking into.

 

 

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Has been a number of reports of faulty front Pirelli tyres, one guy had the dealer replace tyres twice until the problem went away. After much  mechanical testing amounted to nothing. Whirring is normal for the stock Pirelli tyres, especially the rear. After 1000kms or so, Whirring seems to be less noisy. 

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@Dingleway123 Here's a thread that a number of oem tire issues have been reported in.

 

 

 

 

"Men do not quit playing because they grow old, they grow old because they quit playing" Oliver Wendell Holmes - Mods - HDB handguards, Camel-ADV Gut guard, 1 finger clutch, The Fix pedal & Rally pipe, RR side/tail rack, RR 90nm spring & Headlight guard, Rally seat, OEM heated grips- stablemate Beta 520RS

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