Thinking about some Fikse profil 18s
what size tires do you guys go to?
255 315?
or OEM 235 305?

Suggestions?

PG

 

Nevermind
I already decided to go cups 315/245s on the new wheels.

 

that is what I run Hoosiers on mine with the Fikse S5. Works great

 

Rob,
Do you have pics with the S5?

 

You didn't specify what profile tires you are running so it's hard to give you good advice, but be cautious of the overall diameter and ensure that it matches up to the stock (front to rear) ratio so that you don't confuse the ABS.

 

not familiar with crappy cups.
but R888 you want 255/315, there's only one aspect ratio for those width at 18"