Hi Everyone, I have started doing some research, but have not found much regarding super chargers and summer tires for street use that can help me put some power down. I wanted to give some information on what I have found and see what you all would recommend by comparison. For the sake of time I will only provide suspension and power adder add on's as I don't think drivetrain mod's will make a difference. My 13 GT track pack has a Roush Phase 1 kit with VMP tunes (91 and 93 octane) along with the Ford Racing Adjustable suspension kit (drop is ~1 inch according to Ford). My current tires, which are still new, are Michelin PS4S tires 255/40/ZR19. The car is just a handful presently in gears 1-2 and sometimes 3rd. I planned to upgrade my tires and wheels later, but I feel after my last scary experience I need to expedite my plans for it. Power wise VMP stated I should be around 600-625hp at the crank, tq wise I am unsure. I told them my tire size at the time of tuning so they may have made the car more conservative in the bottom end. I would love to stick with Michelins as I think they make a great tire, but it has been fairly hard to find PS4S beyond 285mm tire, at least on tire rack. I know there is a sacrifice on what is more important but there are some wonderful twisty roads in my backyard. Looking for a good summer tire that gives great handling but helps me put down more of my power to make the first 3 gear's safer. From what I have found 19x 8.5 inch wide tires up front would be ideal given I have the OEM brembo's and 19x10 inch in the rear. Tire wise it seems like 255/40/zr19 is more than good enough and a minimum of 285mm would be required in the rear. From what I have read 10 inch wide rims in the rear don't require any spacers and fit fine while being safe on a 305mm tire under aggressive cornering. The other tire I was considering were the Nitto 555G2 tires. I can find this in a 305mm, but this set up will cost me more as I would have to by matching fronts. What are your thoughst on 285mm vs 305mm on my car as well as wheel sizes given my power?