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I have been running Dunlop SP sport maxx tires in the summer on 19" 351m wheels with the staggered set up. One has a sidewall bubble now and down to 4/32 tread depth. Time for 4 new tires. I get the run flat vs non run flat argument, and will stay with run flats for a variety of reasons. I wasn't crazy about the Dunlop's, but they didn't suck. I'm looking for good handling, quiet ride, reasonable tread wear, and good resistance to hydro planing. I use the car as a DD, and don't need it to feel like it is riding on rails.
Tire rack shows 5 options other than the same Dunlop's
Bridgestone Potenza RE050
Bridgestone Turanza ER300
Pirelli P zero
Michelin Primacy HPZP
Goodyear Excellence ROF

I'd appreciate any feedback from folks who have had experience with some of these tires, or any other 19" staggered run flat set up that has worked well.
Thanks!