Sadly, this years Auto Review tyre test is behind a paywall, but given the range of tyres they tested, the overall results were worth covering.
They also made a rather interesting youtube video of the test, so if your Russian is up to scratch, follow this link.
The full results are on the AutoReview.Ru website, if you're a paying subscriber.
Results
Total: 9.5
Overall
9.5
Total: 9.2
Overall
9.2
Total: 9.2
Overall
9.2
Total: 8.8
Overall
8.8
Total: 8.5
Overall
8.5
Total: 8.5
Overall
8.5
Total: 8.4
Overall
8.4
Total: 8.4
Overall
8.4
Total: 8.2
Overall
8.2
Total: 8.1
Overall
8.1
Total: 7
Overall
7
I think of the PC6 as a class rival of the Primacy 3 (or 4) & the PS4 as a class rival of the SportContact 6; so: a strange matching I suggest.
The PC6 replaced the SC5 in smaller sizes, and PC5 so it covers both the Prim4 and PS4.
The SC6 is up against the PS4S.
It's all a bit of a naming nightmare!
It certainly makes it hard for testers to compare apples with apples.