biggest tires for 06 gt

[TJW32069]

i recently purchased a 2006 mustang gt i am looking to put street drag tires on the back and new tires on the front along with new rims can anyone tell me the biggest tires that will fit on the back and front with 18 inch rims

 

[Jet Mek]

The Saleen set up is 275/35/20 up front and 275/40/20 out back. With that said if you use those sizes on Tirerack you can look at the Revs/mile and then figure out the rest for 18" tires. I have this on my 05 and it fits fine!
Good Luck

 

[wusthof]

I've seen a few 305/40-18s and some have had a 315width on there too.........

 

[Snake-Eye]

Im currently running 305/45/18 and I'm thinking of going to 315 !!

Front is 265/45/18