195/45R16 in inches

A 195/45R16 tire is 22.9″ tall and 7.7″ wide, and fits a 16″ wheel. In inches it is written 22.9×7.7R16.

Diameter22.91″

Width7.68″

Sidewall3.45″

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

Manufacturer data

How tall 195/45R16 tires really are

Heights published by Toyo for the one tire in this size. Their published revolutions per mile work out to 22.2″ under load (below).

The one tire listed, the Toyo Observe G3-Ice, measures 22.91″: 0.00″ taller than the size code's 22.91″.

Height under load22.2″

Published revs per mile (907) mean the tire rolls like a 22.2″ tire on the vehicle. Use this for speedometer calibration.

1 tire in 195/45R16

Sort by the spec you care about.

	Load					Revs/mi	Source
Toyo Observe G3-IceWinter	XL · 84T	22.91	19.2	11.3	1,102	907	Spec page

Is 195/45R16 a 23-inch tire?

≈23″

Yes. The size code works out to 22.91″, and the 1 tire here publishes 22.91″, so people call it a 23.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

Size	Diameter ″	vs 195/45R16	Difference
195/50R15	22.68	-0.23″	-1.0%
245/40R15	22.72	-0.19″	-0.8%
225/45R15	22.97	+0.06″	+0.3%
185/55R15	23.01	+0.10″	+0.4%
205/50R15	23.07	+0.16″	+0.7%
205/45R16	23.26	+0.35″	+1.5%
215/45R16	23.62	+0.71″	+3.1%
195/50R16	23.68	+0.77″	+3.4%
225/45R16	23.97	+1.06″	+4.6%
185/55R16	24.01	+1.10″	+4.8%

How to read 195/45R16

How to read any tire size

How 195/45R16 84T 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.

1195Section width

195 mm across the widest point, or 7.68 inches. Every 195 size

245Aspect ratio

A percentage, not a measurement: the sidewall is 45% as tall as the tire is wide, which is 87.8 mm or 3.45 inches.

3RConstruction

Radial construction.

416Wheel diameter

Mounts on a 16-inch wheel. Approved wheel widths run 6.0″ to 7.5″.

584Load index

Each tire carries up to 1,102 lb (500 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	22.91	582 mm
Section width	7.68	195 mm
Sidewall height	3.45	87.8 mm
Circumference	72.0	1,828 mm
Revolutions per mile (calculated, unloaded)	880.3	547 per km
Revolutions per mile (published by manufacturers)	907	564 per km
Approved wheel width	6.0–7.5	152–191 mm

Speedometer error after switching to 195/45R16

Your actual speed– mph

Questions about 195/45R16

What is 195/45R16 in inches?

22.91 inches tall, 7.68 inches wide, on a 16-inch wheel. Written in inches, that is roughly 22.9×7.7R16.

What wheel width do I need for 195/45R16?

Manufacturers approve 6.0–7.5″ wide wheels for this size.

How many revolutions per mile does a 195/45R16 make?

Published figures run 907 revolutions per mile. The calculated figure is 880.3, but manufacturers measure the tire under load, where it rolls on a smaller radius.