1. I get a wheel vibration when I take my hands off the handle bars at about 60k/h. Ive checked the tyre pressure and thats OK. Ive got a Bridgestone hoop on the back and the old original Sava on the front . I read on Modern Vespa that others report this problem. Anyone here got any ideas?
The handlebar vibration is a well known issue with the GT / GTS, anecdotal evidence (various Vespa forums) suggests it goes away if you fit Pirelli tyres front & rear, I forget the actual model Pirelli, all I remember it is 23 Front, 24 Rear (part of the model/version number not the PSI).
There's also another claimed improvement, which involved replacing the existing chrome bar ends with heavier weight ones.
The only comment I can add is that I do not have this issue with my GT200, but then I have Pirelli tyres front & rear.
My son David (Motorrad) has just arrived home with my GT200 and tells me that he experienced the worst handlebar vibration when using Contis.
He tried Michellin, that was not too bad, but his pick was the Pirelli as it was barely noticable, if noticable at all, on his GT200 / GT250 / GT 300.