Sounds like a stupid question but I see nothing on the page stating which, and it's a fairly big difference in miles.
Example:
New Belt:
Piaggio: every 9K
MV workshohp: 9K
Greasy: 4K on the 150's, 6K~8K on the GT/GTS. because the GT/GTS are capable of higher speeds they tend to heat the belts more and thus they break down.
[url]https://modernvespa.com/forum/wiki-service-intervals[url][/url]
