What size tire do I need

[93fakesnake]

I'm about to put a set of 20x8.5 and 20x10 wheels on my 06 GT. What size tires do you think I need to go with? It is a daily driver

 

[BOSSMotorsports]

im running 255/35R20 for the front and 275/35R20 for the rear

 

[93fakesnake]

Thanks