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265/70R15 in inches

A 265/70R15 tire is 29.6″ tall and 10.4″ wide, and fits a 15″ wheel. In inches it is written 29.6×10.4R15.

Diameter29.61″
Width10.43″
Sidewall7.30″
265/70R15 drawn to scale: 29.61 inch diameter, 7.30 inch sidewall, 15 inch wheel, 10.43 inch tread width15″ wheel7.30″29.61″ overall10.43″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 265/70R15 tires really are

Heights published by General and Toyo for all 2 tires in this size. Their published revolutions per mile work out to 28.7–28.8″ under load (below).

Real 265/70R15 tires measure 29.60–29.64″, against 29.61″ from the size code. They run both taller and shorter than the size code.

Height under load28.7–28.8″

Published revs per mile (701–702) mean the tire rolls like a 28.7–28.8″ tire on the vehicle. Use this for speedometer calibration.

Weight spread37.3–38.6 lb

The lightest (General Grabber A/TX, SL) is 1.3 lb lighter per corner than the heaviest (Toyo Observe G3-Ice, SL).

2 tires in 265/70R15

Sort by the spec you care about.

LoadRevs/miSource
General Grabber A/TXAll-terrainSL · 112T29.6037.314.02,469702Spec page
Toyo Observe G3-IceWinterSL · 112T29.6438.613.72,469701Spec page

Is 265/70R15 a 30-inch tire?

≈30″

Close. The size code works out to 29.61″, and the 2 tires here publish 29.60–29.64″, so people call it a 30.

All 30-inch tire sizes, on every wheel size.

A true 30×10.00R15 is 0.39″ taller on paper and 0.4″ narrower.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 265/70R15Difference
235/75R1528.88-0.73″-2.5%
255/70R1529.06-0.55″-1.9%
225/75R1629.29-0.32″-1.1%
245/70R1629.50-0.10″-0.3%
235/75R1629.88+0.27″+0.9%
30×10.00R1530.00+0.39″+1.3%
30×9.50R1530.00+0.39″+1.3%
30×10.00R1430.00+0.39″+1.3%
255/70R1630.06+0.45″+1.5%
265/75R1530.65+1.04″+3.5%

How to read 265/70R15

How to read any tire size

265/70R15 112T as printed on the tire sidewall, with each part numbered265/70R15 112T123456
How 265/70R15 112T 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

270Aspect ratio

A percentage, not a measurement: the sidewall is 70% as tall as the tire is wide, which is 185.5 mm or 7.30 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 diameter29.61752 mm
Section width10.43265 mm
Sidewall height7.30185.5 mm
Circumference93.02,362 mm
Revolutions per mile (calculated, unloaded)681.2423 per km
Revolutions per mile (published by manufacturers)701–702436 per km
Approved wheel width7.0–9.0178–229 mm

Speedometer error after switching to 265/70R15

Your actual speed– mph

Questions about 265/70R15

What is 265/70R15 in inches?

29.61 inches tall, 10.43 inches wide, on a 15-inch wheel. Written in inches, that is roughly 29.6×10.4R15.

How much does a 265/70R15 tire weigh?

Between 37.3 lb and 38.6 lb for the 2 tires listed here. The lightest is the General Grabber A/TX (SL); the heaviest is the Toyo Observe G3-Ice (SL).

What wheel width do I need for 265/70R15?

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

How many revolutions per mile does a 265/70R15 make?

Published figures run 701–702 revolutions per mile. The calculated figure is 681.2, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 265/70R15 than 255/70R15?

0.55 inches taller on paper (29.61″ vs 29.06″), which raises the axle about 0.28″. Your speedometer will read about 1.9% slow.