Re: 156 V6 Cambelt Am I Pushing My Luck?
A belt is a belt, and only one which is weakened significantly will be visable as being 'worn'. That point is not defined, and depends on all of the following: heat of the engine, grade of the rubber, frequency of use, type of use... Finding a belt in such a state would be pure luck due to the stresses placed on them... weakness causes them to snap quickly.
So, the rule is, change early and reduce the risk of a failure occuring.
It goes along the same lines as wear and tear... high use often, high repair often.