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This is a common sound on Zero motorcycles, for reasons which have never been decisively explained.
;Related Confirming Symptoms
* Usually occurs only when pressing on the brake lever or pedal. Rarely occurs at specific speeds when brakes are not pressed (the pad(s) are resting on the caliper).
* Vibration felt through the brake lever or pedal when squealing.
;Effects
* Brake performance seems ''technically'' unaffected.
* As the loudest sound from the vehicle, this can be unnerving for rider, passenger, or onlookers.
;Potential Causes
: This was more common on 2013-2014 models which had cheaper / lower spec [[Brake Systems]].
: This suggests a design issue between the disc and calipers that tends to produce resonance the way the pad is mounted.
;Potentional Solutions
* [http://www.loctite.ph/php/content_data/LT4246_disc_brake_quiet_stick11.pdf LocTite Disc Brake Quiet stick applicator] or silicone grease for the backs of the pads.
* [http://electricmotorcycleforum.com/boards/index.php?topic=8128 Apply water to the calipers after a ride] seems to eliminate squeal for about a week or so.
* Camfering pad edges.
* If ''the bike is new and brake squeal is constant'':
*: Bed the brakes per the [[Official Owners Manual]] and then give the bike a gentle wash.
[[Category:Wheel Sound]]
;Related Confirming Symptoms
* Usually occurs only when pressing on the brake lever or pedal. Rarely occurs at specific speeds when brakes are not pressed (the pad(s) are resting on the caliper).
* Vibration felt through the brake lever or pedal when squealing.
;Effects
* Brake performance seems ''technically'' unaffected.
* As the loudest sound from the vehicle, this can be unnerving for rider, passenger, or onlookers.
;Potential Causes
: This was more common on 2013-2014 models which had cheaper / lower spec [[Brake Systems]].
: This suggests a design issue between the disc and calipers that tends to produce resonance the way the pad is mounted.
;Potentional Solutions
* [http://www.loctite.ph/php/content_data/LT4246_disc_brake_quiet_stick11.pdf LocTite Disc Brake Quiet stick applicator] or silicone grease for the backs of the pads.
* [http://electricmotorcycleforum.com/boards/index.php?topic=8128 Apply water to the calipers after a ride] seems to eliminate squeal for about a week or so.
* Camfering pad edges.
* If ''the bike is new and brake squeal is constant'':
*: Bed the brakes per the [[Official Owners Manual]] and then give the bike a gentle wash.
[[Category:Wheel Sound]]