245/60R17 in inches

A 245/60R17 tire is 28.6″ tall and 9.6″ wide, and fits a 17″ wheel. In inches it is written 28.6×9.6R17.

Diameter28.57″

Width9.65″

Sidewall5.79″

Drawn to scale. Nominal dimensions calculated from the size code.

Manufacturer data

How tall 245/60R17 tires really are

Heights published by Toyo for the one tire in this size. Their published revolutions per mile work out to 27.7″ under load (below).

The one tire listed, the Toyo Open Country A/T III, measures 28.60″: 0.03″ taller than the size code's 28.57″.

Height under load27.7″

Published revs per mile (727) mean the tire rolls like a 27.7″ tire on the vehicle. Use this for speedometer calibration.

1 tire in 245/60R17

Sort by the spec you care about.

	Load					Revs/mi	Source
Toyo Open Country A/T IIIAll-terrain	XL · 108T	28.60	34.2	13.1	2,205	727	Spec page

Is 245/60R17 a 29-inch tire?

≈29″

Close. The size code works out to 28.57″, and the 1 tire here publishes 28.60″, so people call it a 29.

All 29-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

Size	Diameter ″	vs 245/60R17	Difference
345/40R17	27.87	-0.71″	-2.5%
215/65R17	28.00	-0.57″	-2.0%
235/60R17	28.10	-0.47″	-1.7%
295/45R18	28.45	-0.12″	-0.4%
225/65R17	28.52	-0.06″	-0.2%
245/55R18	28.61	+0.04″	+0.1%
225/60R18	28.63	+0.06″	+0.2%
275/55R17	28.91	+0.33″	+1.2%
235/65R17	29.03	+0.45″	+1.6%
255/60R17	29.05	+0.47″	+1.7%

How to read 245/60R17

How to read any tire size

How 245/60R17 108T 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.

1245Section width

245 mm across the widest point, or 9.65 inches. Every 245 size

260Aspect ratio

A percentage, not a measurement: the sidewall is 60% as tall as the tire is wide, which is 147.0 mm or 5.79 inches.

3RConstruction

Radial construction.

417Wheel diameter

Mounts on a 17-inch wheel. Approved wheel widths run 7.0″ to 8.5″.

5108Load index

Each tire carries up to 2,205 lb (1,000 kg) at its maximum pressure.

6TSpeed rating

Rated for up to 118 mph sustained.

XLExtra load

Printed after the size.

Specification	Inches	Metric
Overall diameter	28.57	726 mm
Section width	9.65	245 mm
Sidewall height	5.79	147.0 mm
Circumference	89.8	2,280 mm
Revolutions per mile (calculated, unloaded)	705.8	439 per km
Revolutions per mile (published by manufacturers)	727	452 per km
Approved wheel width	7.0–8.5	178–216 mm

Speedometer error after switching to 245/60R17

Your actual speed– mph

Questions about 245/60R17

What is 245/60R17 in inches?

28.57 inches tall, 9.65 inches wide, on a 17-inch wheel. Written in inches, that is roughly 28.6×9.6R17.

What wheel width do I need for 245/60R17?

Manufacturers approve 7.0–8.5″ wide wheels for this size.

How many revolutions per mile does a 245/60R17 make?

Published figures run 727 revolutions per mile. The calculated figure is 705.8, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 245/60R17 than 225/65R17?

0.06 inches taller on paper (28.57″ vs 28.52″), which raises the axle about 0.03″. Your speedometer will read about 0.2% slow.