An update on the PA4s. I noticed the other day that the fronts were just about down to the legal limit at 4mm. Not impressed, as I see from a previous post in April that I covered 9,000 miles on them last winter. I then fitted them early this year, due to an embarrassing incident with a summer tyre so since mid-September I have been running on the PA4s again, and IIRC have covered around 4,000 miles since then. That makes a total of 13,000 with perhaps a little to go when I get round to examining them closely. Rather than replace them now, I think I might swop the front and rears, as the rears have worn very little. The downside is that I will then need to buy 4 next year at c.€500. As an aside, and probably reported elsewhere, I bought a brand new set of genuine Saab 16" wheels for the winter, and the car runs really smoooooooooooothly now and, even better, virtually no rear-wheel drone with 13,000 under their belt.
Having had a close examination of the tyres, I was looking at a bit of the tread, not the wear indicators
. Having found the treadware indicators it looks like there is about 1mm left on the fronts, so assuming an even wear rate, they should have about 3-4,000 miles left. A total of c.16,000 isn't too bad I suppose given that it's the fronts on an Aero
The rears still have at least 7mm left, so on that basis they should last about 56,000 miles, meaning I should get at least two more seasons out of them, perhaps 3.