back in June I undertook a 2,500 mile trip and ever since then I've been trying to track down the source of an annoying vibration that's making the mirrors practically useless at higher speeds.

Initially I thought it was the chain as the bike had done 13,500 miles by the end of the trip � chain and sprockets were all changed out to no avail. next I turned my attention to the tyres as the rear was worn out and needed replacing, the front was a bit out of balance and was getting low too, so new Anakee 2s all round � still the vibes persist.

I don't think it's the engine as the mirrors remain clear up to about 60mph regardless of gear (and therefore revs), but past 60 things start getting a bit fuzzy � by 70mph the mirrors are vibrating sufficiently that I can't really tell what kind of vehicle is behind me if they're a little way back.

I know it's a big old single and vibes are to be expected, but I hear so many people on here saying their bikes are getting smoother the more miles they do � mine seems to be going the other way (it currently stands at 15,200 miles).

What speed do the mirrors become vibey on your bikes???