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 Low Speed Vibrations

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PostSubject: Low Speed Vibrations   Mon Feb 04, 2019 2:13 am

Hi all,

tl;dr: Put a new front wheel on and new front/rear tires, now I'm getting low speed (~20mph) vibrations. Help please?

I have a '15 WRR. I got it with like-new D606 tires mounted on it, rode it like that for about 500 miles, then decided to get a more street biased tire for commuting. I also moved to a new 19" front wheel to compromise closer to a supermoto setup. The front wheel is a Warp 9, 2.15"x19" rim. The tires are Mitas E-07s, 100/90-19 front and 120/80-18 rear.

I just went out for my first ride with the new wheel/tires today, probably hit no faster than 40mph, but noticed a very significant vibration (maybe oscillation is a better word to describe it). It seems to be worst around 20-25 mph. I'm used to the vibration of the engine; this is a different, more violent, slower frequency vibration. It feels like what I would imagine an unbalanced wheel would feel like, but as far as I can tell I balanced both wheels (with the tires on) dead-on. The tires both look well seated to me. Any ideas what might be causing this?
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PostSubject: Re: Low Speed Vibrations   Mon Feb 04, 2019 7:26 pm

I'd double-check the wheel balance.
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PostSubject: Re: Low Speed Vibrations   Tue Feb 05, 2019 9:10 am

Wheel or tire out of round?
We used to say you can balance a brick but it won't ride very well wink
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PostSubject: Re: Low Speed Vibrations   Tue Feb 05, 2019 1:39 pm

Check that the wheel is true, properly balanced, and that the brake rotor isn't warped.
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Low Speed Vibrations
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