I'm 120KG and carry about 10KG in stuff on my daily commute - 600km's in the first 6 months of ownership, and it's just had a check over... all if good.
I think they're playing it safe (to echo other comments), but also if you are on the heavier end of the spectrum, the bushes on the rear triangle, and the suspension bush will wear at a faster rate.
I'm 120KG and carry about 10KG in stuff on my daily commute - 600km's in the first 6 months of ownership, and it's just had a check over... all if good.
I think they're playing it safe (to echo other comments), but also if you are on the heavier end of the spectrum, the bushes on the rear triangle, and the suspension bush will wear at a faster rate.