Buzz feeling in seat

[Toledo Mark]

Over the years I have had a buzz feeling in the seat that I believe I have figured out, somewhat.  This buzzing vibration feeling only happens when braking with the rear wheel in hotter weather.  On a day long ride I might feel it once or twice.  It happens when applying the brake lightly at slower speeds like maybe 30 moth and below.  I can say in the last 5000 miles I might have felt it 5 times.

Pads are OE, bike is a 99 with about 60k on it. 

Any thoughts on the cause?  Thanks.

[R J]

Is it a buzz or a in/out sensation?

What I was thinking maybe a warped rotor.

But ya usually feel that in the brake pedal.

About the only other thing would be a wheel bearing going bad slowly but surely.

[donaldcc]

  I get the same thing and have figured it out.  I have a "blinker buddy" with my Ultimate KBB. 

[BF]

Switch seats.....unless you sorta like it. 

[Ricky-D]

You have already associated it with the rear brakes.

Get some new brake pads.

***

[Valkjerk]

Hey TM, could I buy that seat from ya? Sounds like fun.

[Patrick]

I agree with RJ, might be a warped rotor.

[sandy]

Relish it, it'll save money at the adult toy store.