Given the OP is doing an LS swap, I'm guessing turning fast is probably not high on the priority list and MT's fit the bill nicely (otherwise Hoosiers are an option though expensive). There's really not much point in x HP if you don't have the tire to put down the power properly. With the LS1's low end torque traction will have an even higher priority. C5 came with a 295 rear so that'd be bare minimum, probably wider with more power from cams/head/etc. Not saying wide street tires are nice, just thinking that if you're adding a bunch of power then have the appropriate tire compound then worry about width. More options for a 255 radial than a super wide street tire (for 17" anyway).

 

With a properly executed fender flare and wheel offset, the 315/35/17 R888 is what id go with personally. They are the same overall diameter as the 275/40 for a little more gear to help spread out all that LS trq with a little more sidewall vs 18's to help strait line traction. Great compound for dry traction, and handling integrity for the car and with the width to back it up. These tires are also quite affordable at $225 vs an 18" counterpart. Its a clear top choice.

 

too much information, I am lost. LOL

i really appreciate all the help. All I know is that I will probably stay with 17's. Hoping i can go 17x10 +38 on the RPF'1.

Rice - how did you get 17x11?

 

Both rice and junky had their RPF1's cut and widened. They don't make a 17x11.

 

Thanks Manga, I didnt know that they do that.

can I have my 17x9 or will will that be a stretch?

 

11.5

 

Just put a lift in the ass end, 17" steel wheels, and some 14" wide Hoosiers