Depending on the offset the 245/40R17 will fit on the rear with no problems. If I can help with the tires let me know.

 

btw, the offset is 45. And the tires i am looking for is from tirerack too, hankook rs3 and kumho xs.

 

i have 245s on 17x8 rpf1s...

they fit okay.. its not the native size but it fits without any sort of crazy squeezing

 

bump~~need to know can i fit 255 on rear, and the rear wheel offset is 45.

 

245 is more ideal.
I'm running 255 on 9.5in rims.

 

bump~`

 

then should i run 40 or 45?

 

40
try using this
http://www.1010tires.com/TireSizeCalculato...ubmit&reset=yes

 

255/40s wont fit on a 17x8"

So did you actually buy rims OP? Or you still BSing us?

 

i think he's still confuse on what size to get...
OP, if I was going to spend money on wheels, I would get something that is wider than stock (ap2 = 17x8.5)
do more research before buying something you may regret later down the road.