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275/55R19 in inches

A 275/55R19 tire is 30.9″ tall and 10.8″ wide, and fits a 19″ wheel. In inches it is written 30.9×10.8R19.

Diameter30.91″
Width10.83″
Sidewall5.95″
275/55R19 drawn to scale: 30.91 inch diameter, 5.95 inch sidewall, 19 inch wheel, 10.83 inch tread width19″ wheel5.95″30.91″ overall10.83″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 275/55R19 tires really are

Heights published by Toyo for all 4 tires in this size. Their published revolutions per mile work out to 30.0″ under load (below).

Real 275/55R19 tires measure 30.90–30.91″, against 30.91″ from the size code. They run both taller and shorter than the size code.

Height under load30.0″

Published revs per mile (672) mean the tire rolls like a 30.0″ tire on the vehicle. Use this for speedometer calibration.

Weight spread38.3–43.0 lb

The lightest (Toyo Celsius II, SL) is 4.8 lb lighter per corner than the heaviest (Toyo Open Country A/T III, SL).

4 tires in 275/55R19

Sort by the spec you care about.

LoadRevs/miSource
Toyo Celsius IITouringSL · 111V30.9138.311.72,403672Spec page
Toyo Observe G3-IceWinterSL · 111T30.9139.712.02,403672Spec page
Toyo OPEN COUNTRY Q/TAll-seasonSL · 111V30.9141.512.32,403672Spec page
Toyo Open Country A/T IIIAll-terrainSL · 111H30.9043.013.52,403672Spec page

Is 275/55R19 a 31-inch tire?

≈31″

Yes. The size code works out to 30.91″, and the 4 tires here publish 30.90–30.91″, so people call it a 31.

All 31-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 275/55R19Difference
255/55R1930.04-0.87″-2.8%
235/60R1930.10-0.81″-2.6%
265/55R1930.48-0.43″-1.4%
305/45R2030.81-0.10″-0.3%
275/50R2030.83-0.08″-0.3%
275/60R1830.99+0.08″+0.3%
255/55R2031.04+0.13″+0.4%
255/60R1931.05+0.14″+0.4%
255/65R1831.05+0.14″+0.5%
235/60R2031.10+0.19″+0.6%

How to read 275/55R19

How to read any tire size

275/55R19 111V as printed on the tire sidewall, with each part numbered275/55R19 111V123456
How 275/55R19 111V is printed on the sidewall. It's the most common code among the 4 tires here (2 of them); tires in this size come in other load and speed ratings too.
1275Section width

275 mm across the widest point, or 10.83 inches. Every 275 size

255Aspect ratio

A percentage, not a measurement: the sidewall is 55% as tall as the tire is wide, which is 151.3 mm or 5.95 inches.

3RConstruction

Radial construction.

419Wheel diameter

Mounts on a 19-inch wheel. Approved wheel widths run 7.5″ to 9.5″.

5111Load index

Each tire carries up to 2,403 lb (1,090 kg) at its maximum pressure.

6VSpeed rating

Rated for up to 149 mph sustained.

SpecificationInchesMetric
Overall diameter30.91785 mm
Section width10.83275 mm
Sidewall height5.95151.3 mm
Circumference97.12,466 mm
Revolutions per mile (calculated, unloaded)652.5405 per km
Revolutions per mile (published by manufacturers)672418 per km
Approved wheel width7.5–9.5191–241 mm

Speedometer error after switching to 275/55R19

Your actual speed– mph

Questions about 275/55R19

What is 275/55R19 in inches?

30.91 inches tall, 10.83 inches wide, on a 19-inch wheel. Written in inches, that is roughly 30.9×10.8R19.

How much does a 275/55R19 tire weigh?

Between 38.3 lb and 43.0 lb for the 4 tires listed here. The lightest is the Toyo Celsius II (SL); the heaviest is the Toyo Open Country A/T III (SL).

What wheel width do I need for 275/55R19?

Manufacturers approve 7.5–9.5″ wide wheels for this size.

How many revolutions per mile does a 275/55R19 make?

Published figures run 672 revolutions per mile. The calculated figure is 652.5, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 275/55R19 than 265/55R19?

0.43 inches taller on paper (30.91″ vs 30.48″), which raises the axle about 0.22″. Your speedometer will read about 1.4% slow.