For me, the PR5 front is too soft outboard of the center zone (the small chevron sipes). The region of the large/deep sipes wears quickly (6~7K miles of life) and the tire profile becomes increasingly triangular. The PR5 rear wears very well, providing 9~10K of service life and maintaining a relatively rounded profile.
When the OP mentioned cupping, I attribute that to the localized wear at the large sipes.
CORRECTED
When the OP mentioned cupping, I attribute that to the localized wear at the large sipes.
CORRECTED
I knocked, but the door was open.......
Central PA: 2016 Lupin RS - Keys and no TPMS
Central PA: 2016 Lupin RS - Keys and no TPMS