Misty mirrors

[Feasty]

Every evening I get on my bike to go home and find my mirrors misted up, generally they stay misty all the way home. Anyone know why this happens and if it can be stopped from happening?

My car mirrors don't get so misty and since they are heated they don't remain misty anyway...


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Previous: Aprilia Habana Retro 50cc (beauty), Yamaha SR125 (fell apart), Honda XR125 (nippy little commuter), Honda SLR650 (Geewhizz), Yamaha Diversion 900S (Smoooooth) written off courtesy of a stupid escaped horse.
(7 year gap), BMW F650 (Relaxing ride). Aprilia Caponord ETV1000 (Big and bold). Yamaha FZS600 (got me in trouble too quick!).
Current: Yamaha TDM 900 (Comfy, light but big, power when needed).

[craigs23]

My mirrors remained frozen for the whole trip this morning.

It's the cold - there's not enough heat to burn off the condensation (frost at this time of year). Even scraping off the frost before I set off meant they'd misted up again a few miles down the road due to wind chill.

Car mirrors are less prone - often they're heated, their size also helps as well, being larger than bike's smaller/slimer/plastic items.

[LeeR]

I find polishing the mirrors with Autoglym glass polish keeps the misting up at bay for longer.

The best thing is to keep them clean, having a packet of Holts Screenies (Exterior wipes) handy can help.
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My claim to fame: Austin Vince nicked my pen...

[Finglonga]

It's down to the heat differential between the front of the mirror and the rear. Usually bike mirrors rear is sealed so insulates it from matching the fronts temperature so will stay misted up. I have drilled a small hole before now in the bottom of the housing and that has helped allot.
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Andy Sez....
F.Y.Y.F.F.

[Feasty]

I'll start off getting them polished then, wonder if using washing up liquid might work too since it does a good job on the inside of the visor.


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Previous: Aprilia Habana Retro 50cc (beauty), Yamaha SR125 (fell apart), Honda XR125 (nippy little commuter), Honda SLR650 (Geewhizz), Yamaha Diversion 900S (Smoooooth) written off courtesy of a stupid escaped horse.
(7 year gap), BMW F650 (Relaxing ride). Aprilia Caponord ETV1000 (Big and bold). Yamaha FZS600 (got me in trouble too quick!).
Current: Yamaha TDM 900 (Comfy, light but big, power when needed).