i have a set of 18's on mine...if u want drag radials nitto does not make it in 18>>the next best thing is nitto nt555 extreme....good for both..i use them for racing and get out pretty good...my size in the front is 245/40/18 and on the back i have 265/35/18! if u want to take a look at my car check out our site... [ www.dangerousperformance.com ] go under profiles and then julio and u can see my car!!