tiresizeinches.com

Metric tire size · 17 in wheel

245/70R17 tire size in inches and millimeters

mm, 115–395
% of width
inches

Reading 245/70R17. Change any field and the gauge follows.

Overall diameter

30.50in

A 245/70R17 tire stands 30.50 in (774.8 mm) tall, which makes it a 31-inch tire, 0.50 in under.

Section width
9.65 in245 mm
Sidewall
6.75 in171.5 mm
Wheel
17 in431.8 mm
245/70R17 drawn to scaleA 245/70R17 tire drawn to scale, seen from the side and head-on at one scale. Four dimension lines label the overall diameter 30.50 in, the wheel diameter 17 in, the sidewall height 6.75 in and the section width 9.65 in. Every one of those values is stated in text on this page.30.50 in17 in wheel6.75 in9.65 in
Drawn to scale. Hover or focus a row in the equivalents table to lay that size over this one.

Full specification

245/70R17 — one measurement per row, in both unit systems
Dimension Inchesin Millimetersmm
Overall diameter30.50774.8
Section width9.65245.0
Sidewall height6.75171.5
Wheel diameter17.00431.8
Circumference95.832,434.1
245/70R17 — the quantities that are not one measurement in two units
QuantityValueUnit
Revolutions661.2per mile
Revolutions410.8per kilometer
Aspect ratio70% 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 245/70R17 overall diameter of 30.50 in. Each of the 10 sizes in the table is drawn as a tick at its own difference; the pointer marks 285/60R17 at −0.13%. Every plotted value is a row of the table below.−3−2−10123SHORTERTALLER285/60R17 · −0.13%
The scale is percent difference in overall diameter against 30.50 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 30.50 in. A positive difference is taller than 245/70R17; every sign is printed as well as colored.

The most searched equivalents of 245/70R17, 10 listed, sorted by how far each is from 30.50 in. Open a row for its section width and speed.
Size Overall diameterin Difference vs 245/70R17% of diameter, then inches Actual speedmph at an indicated 60
30.46 −0.13% −0.04 in 59.9
30.56 +0.19% +0.06 in 60.1
30.29 −0.71% −0.22 in 59.6
30.88 +1.23% +0.37 in 60.7
30.94 +1.42% +0.43 in 60.9
30.05 −1.48% −0.45 in 59.1
29.99 −1.68% −0.51 in 59.0
29.95 −1.81% −0.55 in 58.9
31.06 +1.81% +0.55 in 61.1
31.07 +1.87% +0.57 in 61.1

The next sizes up and down

One width step and one profile step either side of 245/70R17, on the same wheel.
Size Overall diameterdifference % and inches Section widthvs 245/70R17, then mph at an indicated 60
narrower235/70R17 29.95−1.81% −0.55 in −0.39 in58.9 mph actual
wider255/70R17 31.06+1.81% +0.55 in +0.39 in61.1 mph actual
lower profile245/65R17 29.54−3.16% −0.96 in 0.00 in58.1 mph actual
taller profile245/75R17 31.47+3.16% +0.96 in 0.00 in61.9 mph actual