18x9 tire suggestions

[016erstang]

I got the Cobra R 18x9 in rims with a 245/45/18 (came with the tires) and was wonder what would be the ideal size to get with those rims.

 

[mustang50v8]

I got the Cobra R 18x9 in rims with a 245/45/18 (came with the tires) and was wonder what would be the ideal size to get with those rims.

i have 18x9 FR500 rims on my car. i am running 275/35/18. it looks perfect, with no rubbing at all. i have the nitto 555 (the regular street tire, not the drag radial)