225s are my recommendation. See numerous previous posts on the subject...

 

Man, I am learning a lot on this thread

Here's more details on shot-peening. I had no idea about this one...

http://www.2effe.com/sitefiles/eng/shot.html

(slightly humorous translation to English)

I also found a page explaining the double-valvestem design. As Dexter explained, the design is so that you can bleed normal air out of the top valve while you feed nitrogen to the bottom valve, though how you determine that all of the normal air has been replaced, no one has mentioned. The purpose of using nitrogen is to remove all moisture from the air inside the tire, so that tire pressure does not change inside the tire as the air heats up and cools down during track racing.

 

WRX fitment Weights (no-go on STi):

17x7 K1 TS - 13.5 lbs. $199

16x7 Racer - 16.0 lbs. $165

16x7 Double Racer - 16.0 lbs. $165
17x7 Double Racer - 18.0 lbs. $179

 

FYI shot peening also hardens the surface of the metal, making it more durable.

 

That is a big bump!

 

OOooo, I think I like those Light Grey K1 TS's!

 

Curious, those dual red stems on the K1 TS's replaceable? I assume so... I just aint too hot on the red.

 

Yes - it's a standard valve opening.

 

Thanks!

 

Hey, I went to your site to look at the nice big purty picture of the wheel... but... There's no offset info on thar!

Offset is a concept dat's vewwy vewwy important to us wagon owners....

 

Here are the wagon fit's:

16X7 5-100/114 ET48 KOS DRAC (225 will fit on wagon because of 7" ((not 7.5")) width wheel width - no rear modification needed)
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17X7 5-100/114 ET48 KOS DRAC (same here)
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17X7 5-100 ET50 KOS K1-TS
17X7 5-100 ET50 KOS K1-TS
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16X7 5-100/114 ET48 KOS RACE (same here)