> Hey Vanagang,
> Cruzing back from Santa Cruz last Saturday, my '86 developed a vibration
> that was hard to figure out. At between 50-55MPH a shaking (roughly the
> frequency of the revolving tires) takes place when I'm on the gas but stops
> instantly when I let off the pedal. This happens on level roads and hills
> and only in the above noted speed ranges.
>
> Any clues?

Hi: I recently had the misfortune of having belts break inside my MXL
tires on my Westy. I had two tires go in one week! The tires had about
1/3 tread on them. Junk now. When a belt breaks it will put a lump on
the tire and deform the tread. It can make a serious bump in the wheel
if it is bad enough and the bad tire is on the front.
--
Todd Francis           Ridgefield, Washington USA
'86 Westy Syncro
'91 Tristar