Firestone Firehawk AS vs Bridgestone Potenza Sport — Compared

“If you can, stick to the same tyre all around as mentioned, don’t mix brands or models. So if you're keeping the Turanza T001s up front, rather just get the same ones for the rear. The S001 is more performance-focused, but the T001 offers a better balance of comfort and durability. It’s quieter, rides smoother, and tends to last longer. That said, if you’re thinking about moving to something sportier, skip the S001 and go straight to the Potenza Sport. It’s a newer and more advanced tyre, still within the Bridgestone family, and a solid upgrade in terms of grip and responsiveness.”

“The potenza sport AS is the successor to the RE980+. It is a more modern tire with better performance. In tirerack’s testing though, it was beaten by the Continental DWS06, Michelin Pilot all season 4, and Pirelli Pzero AS+3.”

“Darn, no 255/45R18, so I won't get to try these on the E38 for my next set of summers (it'll probably be the Kumho Ecsta Sport or Bridgestone Potenza Sport instead, but Tire Rack no longer has the Bridgestones in 255/45 even though they're still listed on the Bridgestone site). It seems like tire availability in that size is dropping way off. Conti dropped it in the ECS02 and discontinued the General G-Max RS in that size, now it's gone in the Indy 500 V2. So to run either of those tires I'd have to buy different front wheels and move to square 275s instead of the 255/275 stagger I'm running now. PS4S comes in a 255/45, but I'd have to move up to 285/40 in the rear (from 275/40) and they're rather expensive.”