Just bought an 04 gt. I want to lower it 2" with eibach sportline springs and add 10th anniversary cobra wheels, but am unsure about what size tire to go with. I want to be able to rotate the tires, so no staggered sizes. Will the 275/40r17 fit in the front without any major issues, or should I just stick with the 255/40r17?

 

275's will be fine all around, but DON'T recommend Sportlines. The drop is too agressive for otherwise stock components and may create some geometry issues with the suspension travel.

Stick with approx. 1.5" drop (f) and 1.75" drop (r) as Sport-pro kit offers. You will be tight with 40 series tires and likely rub. I recommend you go with 35 series instead.

Jazzer