Stock wheels are 6.5" width btw... if you are not auto-xing or anything similar I would just stick with the stock size. A 215 width won't be noticable on the street compared to stock. The only advantage of going with a 215/45 is you have a few more tire choices as the stock size doesn't have many options for a replacement. Kuhmo ASX are pretty popular for a stock size.
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