From my 2010 :
Brickstones = 4897 miles. Front shot (cupped, squared off), rear still OK for a spare.
Pirelli Angel ST's = 7307 miles. Rear showing cords (4 plugs), front OK for a spare.
PR2's = 10804 miles. Rear showing cords (no plugs), front cupped, down to wear bars, causing front end shimmy.
PR3's = Testing in progress, please stand by...