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Premium Member
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width is in MM and every 25.4mm is an inch so you can use that, not sure how wide OEM are, but if they are 7 inches then you can fit a 225-235mm wide tire on there.

As far as sidewall its in a percent of the width

275/40/17 is 110mm tall which is 275 * .40 (percent)

Keep the same sidewall height of course

do not run drag radial on a daily driver for MANY reasons (very dangerous)
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