The correct size for GT is 225/50-18. Look at all of the other tire sizes including the standard size for square 18". They are all circa 27" tall tires except for the typo on the staggered 18" spec, which is obviously a copy paste error. There is a new Pirelli tire listed as an OEM fitment in 255/45-18 for the GT. The size on the 18" wheels I test drove was 225/50. I don't know how many other ways there are to say it.
Last edited by Richbot; 10-17-2013 at 08:56 AM..
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