tireheight.com

265/55R20 in inches

A 265/55R20 tire is 31.5″ tall and 10.4″ wide, and fits a 20″ wheel. In inches it is written 31.5×10.4R20.

Diameter31.48″
Width10.43″
Sidewall5.74″
265/55R20 drawn to scale: 31.48 inch diameter, 5.74 inch sidewall, 20 inch wheel, 10.43 inch tread width20″ wheel5.74″31.48″ overall10.43″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 265/55R20 tires really are

Heights published by Michelin for all 2 tires in this size. Their published revolutions per mile work out to 30.6″ under load (below).

Real 265/55R20 tires measure 31.50″, against 31.48″ from the size code. Every one runs taller than the size code.

Height under load30.6″

Published revs per mile (660) mean the tire rolls like a 30.6″ tire on the vehicle. Use this for speedometer calibration.

Weight spread36.2–36.3 lb

The lightest (Michelin Defender LTX M/S 2, XL) is 0.1 lb lighter per corner than the heaviest (Michelin X-Ice Snow+, XL).

2 tires in 265/55R20

Sort by the spec you care about.

LoadRevs/miSource
Michelin Defender LTX M/S 2All-seasonXL · 113H31.5036.211.02,535660Spec page
Michelin X-Ice Snow+WinterXL · 113H31.5036.310.52,535660Spec page

Is 265/55R20 a 32-inch tire?

≈32″

Close. The size code works out to 31.48″, and the 2 tires here publish 31.50″, so people call it a 32.

All 32-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 265/55R20Difference
305/45R2030.81-0.67″-2.1%
275/50R2030.83-0.65″-2.1%
255/55R2031.04-0.43″-1.4%
235/60R2031.10-0.37″-1.2%
285/50R2031.22-0.26″-0.8%
245/60R2031.57+0.10″+0.3%
275/55R2031.91+0.43″+1.4%
305/50R2032.01+0.53″+1.7%
255/60R2032.05+0.57″+1.8%
285/55R2032.34+0.87″+2.8%

How to read 265/55R20

How to read any tire size

265/55R20 113H as printed on the tire sidewall, with each part numbered265/55R20 113H123456
How 265/55R20 113H is printed on the sidewall. It's the most common code among the 2 tires here; tires in this size come in other load and speed ratings too.
1265Section width

265 mm across the widest point, or 10.43 inches. Every 265 size

255Aspect ratio

A percentage, not a measurement: the sidewall is 55% as tall as the tire is wide, which is 145.8 mm or 5.74 inches.

3RConstruction

Radial construction.

420Wheel diameter

Mounts on a 20-inch wheel. Approved wheel widths run 7.5″ to 9.5″.

5113Load index

Each tire carries up to 2,535 lb (1,150 kg) at its maximum pressure.

6HSpeed rating

Rated for up to 130 mph sustained.

XLExtra load

Printed after the size.

SpecificationInchesMetric
Overall diameter31.48799 mm
Section width10.43265 mm
Sidewall height5.74145.8 mm
Circumference98.92,512 mm
Revolutions per mile (calculated, unloaded)640.7398 per km
Revolutions per mile (published by manufacturers)660410 per km
Approved wheel width7.5–9.5191–241 mm

Speedometer error after switching to 265/55R20

Your actual speed– mph

Questions about 265/55R20

What is 265/55R20 in inches?

31.48 inches tall, 10.43 inches wide, on a 20-inch wheel. Written in inches, that is roughly 31.5×10.4R20.

How much does a 265/55R20 tire weigh?

Between 36.2 lb and 36.3 lb for the 2 tires listed here. The lightest is the Michelin Defender LTX M/S 2 (XL); the heaviest is the Michelin X-Ice Snow+ (XL).

What wheel width do I need for 265/55R20?

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

How many revolutions per mile does a 265/55R20 make?

Published figures run 660 revolutions per mile. The calculated figure is 640.7, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 265/55R20 than 285/50R20?

0.26 inches taller on paper (31.48″ vs 31.22″), which raises the axle about 0.13″. Your speedometer will read about 0.8% slow.