I like the 17s but I think the 18s fit the well better. They come out further too and are more flush with the body. I would change to a taller side wall tire though. This was a problem I was concerned about with my TA when sizing tires. I wanted the bigger rim but wanted a meatier more muscular tire. So I went with 40 series tires. I have 245s front and 275s rear. Here's a picture of my car. It's not the best but hopefully it shows another option.
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Trey
Current ride: 2001 BMW 540iT soon to be manual swapped.
Former rides: 1979 Trans Am WS6: LT1/T56, Kore 3 C5/6 brakes, BMW 18in rims
and my car looks like a 4x4 compared to SW's. Doh! The suspension has settled some since that picture was taken 3 years ago. I'll try to get a better one soon if anyone would care to see.
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Trey
Current ride: 2001 BMW 540iT soon to be manual swapped.
Former rides: 1979 Trans Am WS6: LT1/T56, Kore 3 C5/6 brakes, BMW 18in rims