tireheight.com

205/75R15 in inches

A 205/75R15 tire is 27.1″ tall and 8.1″ wide, and fits a 15″ wheel. In inches it is written 27.1×8.1R15.

Diameter27.11″
Width8.07″
Sidewall6.05″
205/75R15 drawn to scale: 27.11 inch diameter, 6.05 inch sidewall, 15 inch wheel, 8.07 inch tread width15″ wheel6.05″27.11″ overall8.07″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 205/75R15 tires really are

Heights published by General and Toyo for all 2 tires in this size. Their published revolutions per mile work out to 26.3″ under load (below).

Real 205/75R15 tires measure 27.10–27.13″, against 27.11″ from the size code. They run both taller and shorter than the size code.

Height under load26.3″

Published revs per mile (766) mean the tire rolls like a 26.3″ tire on the vehicle. Use this for speedometer calibration.

Weight spread24.3–27.3 lb

The lightest (Toyo Extensa A/S II, SL) is 3.0 lb lighter per corner than the heaviest (General Grabber A/TX, SL).

2 tires in 205/75R15

Sort by the spec you care about.

LoadRevs/miSource
Toyo Extensa A/S IIAll-seasonSL · 97T27.1324.311.21,598766Spec page
General Grabber A/TXAll-terrainSL · 97T27.1027.314.01,609766Spec page

Is 205/75R15 a 27-inch tire?

≈27″

Yes. The size code works out to 27.11″, and the 2 tires here publish 27.10–27.13″, so people call it a 27.

All 27-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 205/75R15Difference
205/70R1526.30-0.81″-3.0%
245/60R1526.57-0.53″-2.0%
295/50R1526.61-0.49″-1.8%
215/70R1526.85-0.26″-0.9%
215/65R1627.00-0.10″-0.4%
255/60R1527.05-0.06″-0.2%
235/60R1627.10-0.00″-0.0%
225/70R1527.40+0.30″+1.1%
215/75R1527.70+0.59″+2.2%
235/70R1527.95+0.85″+3.1%

How to read 205/75R15

How to read any tire size

205/75R15 97T as printed on the tire sidewall, with each part numbered205/75R15 97T123456
How 205/75R15 97T is printed on the sidewall. It's the most common code among the 2 tires here (1 of them); tires in this size come in other load and speed ratings too.
1205Section width

205 mm across the widest point, or 8.07 inches. Every 205 size

275Aspect ratio

A percentage, not a measurement: the sidewall is 75% as tall as the tire is wide, which is 153.8 mm or 6.05 inches.

3RConstruction

Radial construction.

415Wheel diameter

Mounts on a 15-inch wheel. Approved wheel widths run 5.0″ to 7.0″.

597Load index

Each tire carries up to 1,609 lb (730 kg) at its maximum pressure.

6TSpeed rating

Rated for up to 118 mph sustained.

SpecificationInchesMetric
Overall diameter27.11689 mm
Section width8.07205 mm
Sidewall height6.05153.8 mm
Circumference85.22,163 mm
Revolutions per mile (calculated, unloaded)744.0462 per km
Revolutions per mile (published by manufacturers)766476 per km
Approved wheel width5.0–7.0127–178 mm

Speedometer error after switching to 205/75R15

Your actual speed– mph

Questions about 205/75R15

What is 205/75R15 in inches?

27.11 inches tall, 8.07 inches wide, on a 15-inch wheel. Written in inches, that is roughly 27.1×8.1R15.

How much does a 205/75R15 tire weigh?

Between 24.3 lb and 27.3 lb for the 2 tires listed here. The lightest is the Toyo Extensa A/S II (SL); the heaviest is the General Grabber A/TX (SL).

What wheel width do I need for 205/75R15?

Manufacturers approve 5.0–7.0″ wide wheels for this size.

How many revolutions per mile does a 205/75R15 make?

Published figures run 766 revolutions per mile. The calculated figure is 744.0, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 205/75R15 than 255/60R15?

0.06 inches taller on paper (27.11″ vs 27.05″), which raises the axle about 0.03″. Your speedometer will read about 0.2% slow.