I have been using Michelen P2s and P3s over the last few years.
The P3s I put on 16k miles and have people telling me that they need to be replaced.
There is plenty of thread but the front has squared off since it's a dual compound.
I don't see any wear bars, so is squaring off the time to replace them?
Since it is in for service I am having new tires put on but would like to know when to replace them.

Hope this makes sense.