tireheight.com

195/55R15 in inches

A 195/55R15 tire is 23.4″ tall and 7.7″ wide, and fits a 15″ wheel. In inches it is written 23.4×7.7R15.

Diameter23.44″
Width7.68″
Sidewall4.22″
195/55R15 drawn to scale: 23.44 inch diameter, 4.22 inch sidewall, 15 inch wheel, 7.68 inch tread width15″ wheel4.22″23.44″ overall7.68″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 195/55R15 tires really are

Heights published by General and Toyo for all 5 tires in this size. Their published revolutions per mile work out to 22.7–22.8″ under load (below).

Real 195/55R15 tires measure 23.40–23.52″, against 23.44″ from the size code. They run both taller and shorter than the size code.

Height under load22.7–22.8″

Published revs per mile (883–887) mean the tire rolls like a 22.7–22.8″ tire on the vehicle. Use this for speedometer calibration.

Weight spread15.7–20.3 lb

The lightest (Toyo Extensa HP II, SL) is 4.6 lb lighter per corner than the heaviest (Toyo Proxes R1R, SL).

5 tires in 195/55R15

Sort by the spec you care about.

LoadRevs/miSource
Toyo Extensa HP IIPerformanceSL · 85V23.4315.78.91,135887Spec page
General AltiMAX RT45TouringSL · 85V23.4016.511.01,135886Spec page
Toyo Observe G3-IceWinterSL · 85T23.4319.611.31,135887Spec page
Toyo Proxes R888RPerformanceXL · 89V23.4319.86.31,279887Spec page
Toyo Proxes R1RPerformanceSL · 85V23.5220.38.41,135883Spec page

Is 195/55R15 a 23-inch tire?

≈23″

Close. The size code works out to 23.44″, and the 5 tires here publish 23.40–23.52″, so people call it a 23.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 195/55R15Difference
195/50R1522.68-0.77″-3.3%
245/40R1522.72-0.73″-3.1%
225/45R1522.97-0.47″-2.0%
185/55R1523.01-0.43″-1.8%
205/50R1523.07-0.37″-1.6%
185/65R1423.47+0.02″+0.1%
185/60R1523.74+0.30″+1.3%
225/50R1523.86+0.41″+1.8%
175/65R1523.96+0.51″+2.2%
195/60R1524.21+0.77″+3.3%

How to read 195/55R15

How to read any tire size

195/55R15 85V as printed on the tire sidewall, with each part numbered195/55R15 85V123456
How 195/55R15 85V is printed on the sidewall. It's the most common code among the 5 tires here (3 of them); 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

255Aspect ratio

A percentage, not a measurement: the sidewall is 55% as tall as the tire is wide, which is 107.3 mm or 4.22 inches.

3RConstruction

Radial construction.

415Wheel diameter

Mounts on a 15-inch wheel. Approved wheel widths run 5.5″ to 7.0″.

585Load index

Each tire carries up to 1,135 lb (515 kg) at its maximum pressure.

6VSpeed rating

Rated for up to 149 mph sustained.

SpecificationInchesMetric
Overall diameter23.44595 mm
Section width7.68195 mm
Sidewall height4.22107.3 mm
Circumference73.71,871 mm
Revolutions per mile (calculated, unloaded)860.2535 per km
Revolutions per mile (published by manufacturers)883–887549–551 per km
Approved wheel width5.5–7.0140–178 mm

Speedometer error after switching to 195/55R15

Your actual speed– mph

Questions about 195/55R15

What is 195/55R15 in inches?

23.44 inches tall, 7.68 inches wide, on a 15-inch wheel. Written in inches, that is roughly 23.4×7.7R15.

How much does a 195/55R15 tire weigh?

Between 15.7 lb and 20.3 lb for the 5 tires listed here. The lightest is the Toyo Extensa HP II (SL); the heaviest is the Toyo Proxes R1R (SL).

What wheel width do I need for 195/55R15?

Manufacturers approve 5.5–7.0″ wide wheels for this size.

How many revolutions per mile does a 195/55R15 make?

Published figures run 883–887 revolutions per mile. The calculated figure is 860.2, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 195/55R15 than 205/50R15?

0.37 inches taller on paper (23.44″ vs 23.07″), which raises the axle about 0.19″. Your speedometer will read about 1.6% slow.