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33×11.50R20 in inches

A 33×11.50R20 tire is 33.0″ tall and 11.5″ wide, and fits a 20″ wheel.

Diameter33.00″
Width11.50″
Sidewall6.50″
33×11.50R20 drawn to scale: 33.00 inch diameter, 6.50 inch sidewall, 20 inch wheel, 11.50 inch tread width20″ wheel6.50″33.00″ overall11.50″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 33×11.50R20 tires really are

Heights published by Toyo for the one tire in this size. Their published revolutions per mile work out to 31.6″ under load (below).

The one tire listed, the Toyo Open Country R/T Trail, measures 32.50″: 0.50″ shorter than the size code's 33.00″.

Height under load31.6″

Published revs per mile (639) mean the tire rolls like a 31.6″ tire on the vehicle. Use this for speedometer calibration.

1 tire in 33×11.50R20

Sort by the spec you care about.

LoadRevs/miSource
Toyo Open Country R/T TrailRugged-terrainLT E · 118R32.5057.116.92,910639Spec page

Is a 33×11.50R20 really 33 inches tall?

32.5″

Shorter. The name says 33″, and the 1 tire here publishes 32.50″.

All 33-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 33×11.50R20Difference
285/55R2032.34-0.66″-2.0%
265/60R2032.52-0.48″-1.5%
295/55R2032.78-0.22″-0.7%
275/55R2132.91-0.09″-0.3%
275/60R2032.99-0.01″-0.0%
33×12.50R2033.000.00″0.0%
33×13.50R2033.000.00″0.0%
305/55R2033.21+0.21″+0.6%
285/60R2033.46+0.46″+1.4%
295/60R2033.94+0.94″+2.8%

How to read 33×11.50R20

How to read any tire size

33X11.50R20LT 118R as printed on the tire sidewall, with each part numbered33X11.50R20LT 118R1234567
How 33X11.50R20LT 118R 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.
133Overall diameter

33 inches tall, measured on the approved wheel. Flotation sizes give every number in inches.

211.50Section width

11.50 inches across the widest point, or 292 mm.

3RConstruction

Radial construction.

420Wheel diameter

Mounts on a 20-inch wheel. Approved wheel widths run 8.0″ to 10.5″.

5LTLight truck

Marks a light truck (LT) tire.

6118Load index

Each tire carries up to 2,910 lb (1,320 kg) at its maximum pressure.

7RSpeed rating

Rated for up to 106 mph sustained.

ELoad range

Printed separately as "LOAD RANGE E": a 10-ply rating, inflated up to 80 psi (standard load-range table). The load range E tires here carry up to 2,910 lb each, as published.

SpecificationInchesMetric
Overall diameter33.00838 mm
Section width11.50292 mm
Sidewall height6.50165.1 mm
Circumference103.72,633 mm
Revolutions per mile (calculated, unloaded)611.2380 per km
Revolutions per mile (published by manufacturers)639397 per km
Approved wheel width8.0–10.5203–267 mm

Speedometer error after switching to 33×11.50R20

Your actual speed– mph

Questions about 33×11.50R20

What is 33×11.50R20 in inches?

33.00 inches tall, 11.50 inches wide, on a 20-inch wheel. Manufacturers publish 32.50 inches for the 1 tires listed here.

What wheel width do I need for 33×11.50R20?

Manufacturers approve 8.0–10.5″ wide wheels for this size.

How many revolutions per mile does a 33×11.50R20 make?

Published figures run 639 revolutions per mile. The calculated figure is 611.2, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 33×11.50R20 than 275/60R20?

0.01 inches taller on paper (33.00″ vs 32.99″), which raises the axle about 0.00″. Your speedometer will read about 0.0% slow.