ok so i got a flat on my driver front tire on my coupe. now onto the question, i have some old tires from when i had my evo that i never used. they are 245/40/18, can i use two of them on the front of my g coupe with the stock 18" wheels?

 

yes. I have the coupe 18's on my sedan and i'm running 245-45-18 all around. all 4 rims are 18x8 with a 30mm offset. the tires just come staggered from the factory but the wheels are the same.

 

Yup will work out fine on the oe wheels and installed on the front.