My 2012 35i with sport package came with 245/45-19" tires on all wheels. I plan to change for non runflat 235/50-19". I dont like the existing low profile and prefer the non run flat tires. It will only have a small effect on the speed reading, that I can live with. As far as the runflat issue is concerned, I cant remember the last time I had a flat tire.
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