Joined: Apr 2012
I had lots of traction problems even without rain, granted i am running more power than you OP, but I had to go up to NITTO 555's 255/50/R17, and i got them with CERTS, from discount, they have to order them in... Best tire i have ever had on this car, hands down, especially for launching.
Tires i tried and passed on were
Falken Pro G4
I will say, the Azenis and Pro G4's were significantly better then the Ecstas, and would probably be good for most people, but i was still having excess spin on launch so i kept moving up. The NITTO 555's seem to be the gods of traction, at least for me.
2007 Mustang GT Deluxe Edition 5 Speed - White, Red Shelby Stripes
Roush Intake, 322 LPH Fuel Pump, 3.55 Gears, Dana Spicer Aluminum Driveshaft, Magnaflow Race Series Axle-Backs, 91 Oct. Dyno Tuning
255/50/R17 NITTO 555s, Slotted Rotors
324 RWHP, 328 RWTQ - 9-1-2018
1996 Mustang GT Coupe Auto White
2004 Shadow Gray Convertible 4.2L V6
Pacesetter Shortys, 2.5 Duals, Deleted Cats, Custom 2.5 H Pipe, Flowmaster 40s
Auburn Posi with 3.27 gears, 0.5 Phenolic Manifold Spacer