Presently on 85000m with 55000 on this cam belt as i cant believe alfa cant make a belt last more than 36000m what gives first in the chain of destruction leading to the belt breaking cheap ancillares?
You'd better believe it
It's not so much the belts themselves, or even the tensioner/idler, simply the configuration of the running gear itself and the hostile environment it runs in that leads to deterioration of all components, but the tensioner seems to be the one that goes first.
Now there has been a running saga with updates on the tensioner. It's gone like this:
1) The black one. This tended to fragment and explode quite nicely, leading to cambelt failure.
2) The white one. Bit better, but still unreliable, leading to:
3) The current metal one. This appears to be a bit more robust but is less forgiving on the belt, which now takes more of a hammering than before.
So they've never got it right, hence the current official change of 36,000 miles/3 years.
That's before you consider the balance belt etc, another can of worms.
You are an extremely brave person to go to 55,000 miles without changing everything!