Bridgestone Potenzas here as well - So Cal.

 

I don't see many options at all for the F-Sport AWD tires...I wonder if its just a bit early for this tire size/year? Surprised that Tire Rack does not have much at all (all season) for the AWD..

 

235/40/19 is a very rare size...especially for AS tires. I'm going with 245/40/19 when it comes time to replace.

 

Good to hear! Yes the car feels much better as tires put more miles on them compared to those potenza. I keep pressure at 34/35 psi.

 

There is a world of Diff between the B'stone Turanza and the Potenza... I currently run the Potenza RE760 on 3 BMWs and swapped the junk Turanza's as soon as we got my wifes IS350... we've had real good luck with them...

 

I had Potenzas on my old car and really disliked them. The ride was noisy and rough from about 75% treadlife all the way down.

 

These tires have great reviews on tire rack: Ecsta 4X (KU22) is Kumho - 245/40/19...looks like a good option to the Bridgestone Turanza - maybe the dealership will swap them out with the Bridgestone's and give at least partial credit....worth asking about...Anyone have these tires?

 

I have the 4X on my RL, as a cheap alternative to the Pilot A/S. Fairly quiet, good dry, excellent in the rain, not nearly as good as the Pilot A/S in the snow (had 2 sets)