Just curious what it'd look like... on a 17x9 or 17x8.5 for example...

 

I have. It doesnt look right, nor does it drive right. I only did for limping my car around town.

 

Heres a better way to ask it I guess...

What would be the best tire to run on a slammed s2000 with a rear 18x9 +26 offset wheel?

I was thikning 235/35-18 but it doesn't really exist...

245/35-18 i think would rub unless I did a crazy amount of camber.

 

225 is gunna be alot of stretch and its way to narrow gunna look weard and your cars gunna have alot of oversteer

 

I think you're better off getting a set of wheels with reasonable offsets.

 

ASM style rear fender flairs ftw. Get them and put some 255s back there.

 

That is just a bad deal on a set of wheels that do not fit the car. A 9" wheel really needs to have at least a 245/40R17. With that offset they are going to be outside the fenders.

 

would +31 be better? and if so... what size would a 235 work?

Some rolling/tab relocating/pulling is okay... but the ASM fenders would be more body work than i'm willing to do right now.

 

a +31 COULD work, but you'll still need the whole deal - roll, cut bumper tab, and a lot of negative camber (think -3 or greater)