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265/75R15 in inches

A 265/75R15 tire is 30.6″ tall and 10.4″ wide, and fits a 15″ wheel. In inches it is written 30.6×10.4R15.

Diameter30.65″
Width10.43″
Sidewall7.82″
265/75R15 drawn to scale: 30.65 inch diameter, 7.82 inch sidewall, 15 inch wheel, 10.43 inch tread width15″ wheel7.82″30.65″ overall10.43″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 265/75R15 tires really are

Heights published by General and Toyo for all 3 tires in this size. Their published revolutions per mile work out to 29.7–29.8″ under load (below).

Real 265/75R15 tires measure 30.60–30.67″, against 30.65″ from the size code. They run both taller and shorter than the size code.

Height under load29.7–29.8″

Published revs per mile (677–678) mean the tire rolls like a 29.7–29.8″ tire on the vehicle. Use this for speedometer calibration.

Weight spread35.1–38.4 lb

The lightest (General Grabber H/T, SL) is 3.3 lb lighter per corner than the heaviest (Toyo Open Country A/T III, SL).

3 tires in 265/75R15

Sort by the spec you care about.

LoadRevs/miSource
General Grabber H/THighwaySL · 112T30.6035.112.02,469678Spec page
General Grabber HTS60TouringSL · 112S30.6035.112.02,469678Spec page
Toyo Open Country A/T IIIAll-terrainSL · 112S30.6738.413.32,469677Spec page

Is 265/75R15 a 31-inch tire?

≈31″

Close. The size code works out to 30.65″, and the 3 tires here publish 30.60–30.67″, so people call it a 31.

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

A true 31×10.50R15 is 0.35″ taller on paper and 0.1″ wider.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 265/75R15Difference
265/70R1529.61-1.04″-3.4%
30×10.00R1530.00-0.65″-2.1%
30×9.50R1530.00-0.65″-2.1%
255/70R1630.06-0.59″-1.9%
215/85R1630.39-0.26″-0.8%
245/75R1630.47-0.18″-0.6%
265/70R1630.61-0.04″-0.1%
31×10.50R1531.00+0.35″+1.1%
275/70R1631.16+0.51″+1.7%
32×10.00R1532.00+1.35″+4.4%

How to read 265/75R15

How to read any tire size

265/75R15 112T as printed on the tire sidewall, with each part numbered265/75R15 112T123456
How 265/75R15 112T is printed on the sidewall. It's the most common code among the 3 tires here (1 of them); 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

275Aspect ratio

A percentage, not a measurement: the sidewall is 75% as tall as the tire is wide, which is 198.8 mm or 7.82 inches.

3RConstruction

Radial construction.

415Wheel diameter

Mounts on a 15-inch wheel. Approved wheel widths run 7.0″ to 9.0″.

5112Load index

Each tire carries up to 2,469 lb (1,120 kg) at its maximum pressure.

6TSpeed rating

Rated for up to 118 mph sustained.

SpecificationInchesMetric
Overall diameter30.65779 mm
Section width10.43265 mm
Sidewall height7.82198.8 mm
Circumference96.32,446 mm
Revolutions per mile (calculated, unloaded)658.0409 per km
Revolutions per mile (published by manufacturers)677–678421 per km
Approved wheel width7.0–9.0178–229 mm

Speedometer error after switching to 265/75R15

Your actual speed– mph

Questions about 265/75R15

What is 265/75R15 in inches?

30.65 inches tall, 10.43 inches wide, on a 15-inch wheel. Written in inches, that is roughly 30.6×10.4R15.

How much does a 265/75R15 tire weigh?

Between 35.1 lb and 38.4 lb for the 3 tires listed here. The lightest is the General Grabber H/T (SL); the heaviest is the Toyo Open Country A/T III (SL).

What wheel width do I need for 265/75R15?

Manufacturers approve 7.0–9.0″ wide wheels for this size.

How many revolutions per mile does a 265/75R15 make?

Published figures run 677–678 revolutions per mile. The calculated figure is 658.0, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 265/75R15 than 30×9.50R15?

0.65 inches taller on paper (30.65″ vs 30.00″), which raises the axle about 0.32″. Your speedometer will read about 2.2% slow.