I was told if you ride aggressively and/or run top speed consistently, the belt will wear faster. On my daily 40km round trip, about 30km is top speed WOT and about 80% of acceleration is WOT. Would a 10000km belt change or 15000km belt change be more reasonable.
FYI, I am on a DownTown 200.
And, is the belt for the DownTown 300 and 200 identical?