Looking at dimensions on Tire Rack, the section width of the AD-08 is slightly smaller ( 11.5 vs 11.9 inches) than the PSS, but the tread widths ( 11.5) are the same. I have run both on my stock suspension E92 in 295/30/19 without issues. I think the rim protection rubber on the sides of the PSS is a little thicker.
Traction wise, for hot or track use the AD-08 is far better, for cold and wet the PSS.
2011 e92 M3 Monte Carlo Blue ESS 535
2015 cayman GTS
2006 SLK 55 AMG