I replaced the OE Bridgestones prematurely @ 23500 miles due to a puncture in the shoulder of the LF tire. The rears were about 85% worn with another 3500 miles (est) remaining. The fronts were about 75% gone. I was VERY satisfied with the Potenzas. They're an excellent tire!
Nevertheless, after reading this thread, I decided to replace them with the Super Sports. My first impressions (same inflation pressures):
- Definitely quieter- especially from the rear
- Very smooth turn-in
- Smother ride/less harshness over cracks
- Less twitchy - no bump steer
- Wet pavement traction about the same
Steering response is different- more precise, although the Potenzas are quicker at initial inputs (this is very subjective and some drivers might prefer the Potenzas in this regard).
Both tires are well suited for my Z. Either choice is a good one.
9.24.16
6000 mile update and impressions.
Update: Moderate driving. Less than 10% wear. Much better than expected.
Impressions: More tuned to touring than sport. OE Bridgestone's more sport than touring. Both are excellent tires on my Z.