tiresizeinches.com

Metric tire size · 18 in wheel

265/65R18 tire size in inches and millimeters

mm, 115–395
% of width
inches

Reading 265/65R18. Change any field and the gauge follows.

Overall diameter

31.56in

A 265/65R18 tire stands 31.56 in (801.7 mm) tall, which makes it a 32-inch tire, 0.44 in under.

Section width
10.43 in265 mm
Sidewall
6.78 in172.2 mm
Wheel
18 in457.2 mm
265/65R18 drawn to scaleA 265/65R18 tire drawn to scale, seen from the side and head-on at one scale. Four dimension lines label the overall diameter 31.56 in, the wheel diameter 18 in, the sidewall height 6.78 in and the section width 10.43 in. Every one of those values is stated in text on this page.31.56 in18 in wheel6.78 in10.43 in
Drawn to scale. Hover or focus a row in the equivalents table to lay that size over this one.

Full specification

265/65R18 — one measurement per row, in both unit systems
Dimension Inchesin Millimetersmm
Overall diameter31.56801.7
Section width10.43265.0
Sidewall height6.78172.2
Wheel diameter18.00457.2
Circumference99.162,518.6
265/65R18 — the quantities that are not one measurement in two units
QuantityValueUnit
Revolutions639.0per mile
Revolutions397.0per kilometer
Aspect ratio65% of section width
ConstructionRradial

Sizes that will do the same job

Where every equivalent size falls inside the tolerance bandA horizontal scale running from three percent under to three percent over the 265/65R18 overall diameter of 31.56 in. Each of the 10 sizes in the table is drawn as a tick at its own difference; the pointer marks 245/70R18 at −0.19%. Every plotted value is a row of the table below.−3−2−10123SHORTERTALLER245/70R18 · −0.19%
The scale is percent difference in overall diameter against 31.56 in. Every mark is a row of the table below, at its own distance from it.

10 sizes in this table are within ±3% of 31.56 in. A positive difference is taller than 265/65R18; every sign is printed as well as colored.

The most searched equivalents of 265/65R18, 10 listed, sorted by how far each is from 31.56 in. Open a row for its section width and speed.
Size Overall diameterin Difference vs 265/65R18% of diameter, then inches Actual speedmph at an indicated 60
31.50 −0.19% −0.06 in 59.9
31.46 −0.31% −0.10 in 59.8
31.21 −1.12% −0.35 in 59.3
31.94 +1.18% +0.37 in 60.7
32.06 +1.56% +0.49 in 60.9
31.05 −1.62% −0.51 in 59.0
32.07 +1.62% +0.51 in 61.0
30.99 −1.81% −0.57 in 58.9
32.41 +2.68% +0.85 in 61.6
32.47 +2.87% +0.91 in 61.7

The next sizes up and down

One width step and one profile step either side of 265/65R18, on the same wheel.
Size Overall diameterdifference % and inches Section widthvs 265/65R18, then mph at an indicated 60
narrower255/65R18 31.05−1.62% −0.51 in −0.39 in59.0 mph actual
wider275/65R18 32.07+1.62% +0.51 in +0.39 in61.0 mph actual
lower profile265/60R18 30.52−3.31% −1.04 in 0.00 in58.0 mph actual
taller profile265/70R18 32.61+3.31% +1.04 in 0.00 in62.0 mph actual