Rim Size P-Metric Size
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16 Inch 245/75R16
265/70R16 10.5 inches
265/75R16 11.2 inches
285/75R16 12.4 inches
What does the 265 mean on a tire?
265 = Section Width in millimeters (measured at the widest part of the tire from sidewall to sidewall) /60 = Aspect Ratio or section height to width ratio as a percentage. For this example, the side wall is 60% of the section width of the tire (265mm x . 60 = 159mm).
The 33” refers to the width of the tire (285) multiplied by the height percentage of the sidewall (75), in millimeters, x2 because there are two sidewalls, divided by 25.4 (inches) plus the wheel size in inches (16”). Phew!!! That's a mouthful and a lot to digest at once so let's break it down into a simple formula.
Which tire is bigger 265 or 285?
The larger 285/70R17 tire in the photo above stands over an inch taller and is nearly an inch wider than the 265/70R17 size. ... The width of the tread is also a half-inch wider. Many late-model domestic trucks accept this difference in size.2017-03-08