Have you read the discussions under Sticky #8? I had 315/35/ZR17 on my stock rear car. I could only get one finger between the tire and the muffler but I don't have stock mufflers. Sticky #8 discusses the decent tire availability. Since you are 17 front and rear maybe there isn't a problem. The 285/40/ZR17s that I put on look real nice. Plenty wide.
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