Obviously Grand Prixs have a good amount of power. I've had different oppinions on replacing the stock wheels and tires, but im not sure what to do. I'd be hard pressed to think the wheels do anthign but chnage the appearance but tires maybe. Any suggestions.

Wider tires improve handling, puts a bigger foot print on the road.

Taller wheels shorter tires better cornering generally. Wider tires can give more grip but imo decrease ride because you get on uneven road it will pull the car side to side.

If your into the 1/4 mile gig going larger then 16s will actually slow you down. It has to do with physics the whole rotational mass thing. If you can find bigger wheels that are as light or lighter then the factory torque stars ( hard to do since they are about as light as you can get). I'd recommend a wider tire. Keep in mind a wider tire decreases fuel economy. So ask your self what type of driving do I actually do and what exactly am I looking for.

What kind of tires does anyone reccomend???

Goodyear GThr