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I am looking to upgrade the tire size when I replace my tires. I know it is a little early, but I am bored so I thought I would pose the question. Does anyone know what the maximum tire width the STi can run without modifications? I am looking at going to a 235/45/17. Can a 245/45/17 fit? Thanks.
 

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Yes, 245-45/ZR-17's fit. I have a set of Hoosier R3S03's in that size on all 4 rims on my Sti (black w/Silver rims) and they fit fine. I was a bit concerned that the back would rub the inside of the fender but at the SCCA divisionals this weekend at Forbes Field Topeka, Kansas they didn't rub once and I was doing some serious cornering.

Just to let everyone know, the STi is turning heads in the SCCA, especially in AS.

Branden
 

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let us know when you do it. since my (and others) STi runs faster on the speedo, in my experience with my truck, but going withi a bigger tire size that would make the speedo read slower.
 

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I'd really like bigger tires as well, so a 245/45/17 works fine?

Robert~
 
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