I have 60 000km,rolled over just the other day ,and zero issues with belts .I am using a belt well past it's replacement date. I might be 30 000km on it now. I looked at it last week end and inside dia had some visible cracks, outer, smaller cracks, and the sides super smooth. No loss in top speed or acceleration, and it also has not lost any width. And it's a GATES belt. On my 500.note:I have a spare in stand by ðŸ˜
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