The 245's with some good tires should really make a differnce. When I went from the 225/50/15 to the 245/40/17's with some AVS Sports it really helped the car. Still spins them in first and second when you hit the gas but, it's so much more controllable now. I was almost afraird of the car in certain cnditions before. I had to turn the Profec off when my wife drove the car. Now, not just 5 minuites ago I saw my wife smoke the tires leaving the apt. We have a steep hill you have to go up to get out onto the road and I think she got alittle carried away with the load pedal. She thought I'd be pissed. I thought it was cool. You don't get to see your own car smoke the tires very often.