I'd be interested to know also.

I've an 05 sti, with the standard wheel an tire. I have inflated to manufacturer spec but still feel that might be too soft, and thats with only 1 up.
It just feels like the sidewalls are bending/leaning alot when cornering anyway hard.

 

I am running 33PSI front & 29 PSI rear (I think). Changed to Prodrive springs last week & that was the recomendation when running on 17's.

Steve

 

32 front 30 rear on mine

 

Ok, i think thats what i have in mine, maybe 29 in rears, so i'm roughly on the mark.
Maybe its the tires, they were new on it when i bought it last month, but some tire i've never heard of!
Will probably try a set of kumho's when these ones are done.
I went from bridgestone potenza's (rft) to pirelli's (rft) to standard kumho's on my 120d before the scoob, and the kumho was streets ahead of the others in comfort and handling in wet or dry! And durability was only 1 or 2k less, but at half the price, who cares!

 

same here