If I've learned correctly, the 19" wheels on the S4 are a 8.5" width while the 19" wheel options on the S5 are slightly wider at 9". Anybody here running the 9" widths? I like the slightly more concaved look of the 9" width peelers and/or 5-arm rotors. What tire sizes are on these options and how does it effect steering and looks on an S4?
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