Quote:
Originally Posted by Dubbedown
225 is width
40 is sidewall
18 is diameter
the difference in 225/235 will be width and height.
width:
225mm vs 235mm
height:
225 x .40 = 90mm
235 x .40 = 94mm
diameter is same for both at 18"
you're basically looking at 4mm difference in height. i'd go with 225 only b/c assuming you're going with 255/35 rear, they're essentially the same height (90mm and 89.25mm). plus 225/40 is a more common size so it'll be easier to get rubbers.
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I was thinking of going 235/40 all around because it was a squared set. what would be the atvantage of going 255/35 in the rear?