tireheight.com

185/60R13 in inches

A 185/60R13 tire is 21.7″ tall and 7.3″ wide, and fits a 13″ wheel. In inches it is written 21.7×7.3R13.

Diameter21.74″
Width7.28″
Sidewall4.37″
185/60R13 drawn to scale: 21.74 inch diameter, 4.37 inch sidewall, 13 inch wheel, 7.28 inch tread width13″ wheel4.37″21.74″ overall7.28″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 185/60R13 tires really are

Heights published by Toyo for the one tire in this size. Their published revolutions per mile work out to 21.1″ under load (below).

The one tire listed, the Toyo Proxes R888R, measures 21.73″: 0.01″ shorter than the size code's 21.74″.

Height under load21.1″

Published revs per mile (956) mean the tire rolls like a 21.1″ tire on the vehicle. Use this for speedometer calibration.

1 tire in 185/60R13

Sort by the spec you care about.

LoadRevs/miSource
Toyo Proxes R888RPerformanceSL · 80V21.7317.46.3992956Spec page

Is 185/60R13 a 22-inch tire?

≈22″

Yes. The size code works out to 21.74″, and the 1 tire here publishes 21.73″, so people call it a 22.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 185/60R13Difference
225/45R1320.97-0.77″-3.5%
175/70R1322.65+0.91″+4.2%
205/60R1322.69+0.94″+4.3%
185/60R1422.74+1.00″+4.6%
175/65R1422.96+1.22″+5.6%
195/60R1423.21+1.47″+6.8%
185/65R1423.47+1.73″+8.0%
175/70R1423.65+1.91″+8.8%
215/60R1424.16+2.42″+11.1%
185/70R1424.20+2.46″+11.3%

How to read 185/60R13

How to read any tire size

185/60R13 80V as printed on the tire sidewall, with each part numbered185/60R13 80V123456
How 185/60R13 80V is printed on the sidewall. It's the most common code among the 1 tire here; tires in this size come in other load and speed ratings too.
1185Section width

185 mm across the widest point, or 7.28 inches. Every 185 size

260Aspect ratio

A percentage, not a measurement: the sidewall is 60% as tall as the tire is wide, which is 111.0 mm or 4.37 inches.

3RConstruction

Radial construction.

413Wheel diameter

Mounts on a 13-inch wheel. Approved wheel widths run 5.0″ to 6.5″.

580Load index

Each tire carries up to 992 lb (450 kg) at its maximum pressure.

6VSpeed rating

Rated for up to 149 mph sustained.

SpecificationInchesMetric
Overall diameter21.74552 mm
Section width7.28185 mm
Sidewall height4.37111.0 mm
Circumference68.31,735 mm
Revolutions per mile (calculated, unloaded)927.7576 per km
Revolutions per mile (published by manufacturers)956594 per km
Approved wheel width5.0–6.5127–165 mm

Speedometer error after switching to 185/60R13

Your actual speed– mph

Questions about 185/60R13

What is 185/60R13 in inches?

21.74 inches tall, 7.28 inches wide, on a 13-inch wheel. Written in inches, that is roughly 21.7×7.3R13.

What wheel width do I need for 185/60R13?

Manufacturers approve 5.0–6.5″ wide wheels for this size.

How many revolutions per mile does a 185/60R13 make?

Published figures run 956 revolutions per mile. The calculated figure is 927.7, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 185/60R13 than 225/45R13?

0.77 inches taller on paper (21.74″ vs 20.97″), which raises the axle about 0.38″. Your speedometer will read about 3.7% slow.