tireheight.com

185/70R14 in inches

A 185/70R14 tire is 24.2″ tall and 7.3″ wide, and fits a 14″ wheel. In inches it is written 24.2×7.3R14.

Diameter24.20″
Width7.28″
Sidewall5.10″
185/70R14 drawn to scale: 24.20 inch diameter, 5.10 inch sidewall, 14 inch wheel, 7.28 inch tread width14″ wheel5.10″24.20″ overall7.28″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 185/70R14 tires really are

Heights published by General and Toyo for all 2 tires in this size. Their published revolutions per mile work out to 23.5″ under load (below).

Real 185/70R14 tires measure 24.20–24.25″, against 24.20″ from the size code. They run both taller and shorter than the size code.

Height under load23.5″

Published revs per mile (857–859) mean the tire rolls like a 23.5″ tire on the vehicle. Use this for speedometer calibration.

Weight spread15.6–18.1 lb

The lightest (General AltiMAX RT45, SL) is 2.5 lb lighter per corner than the heaviest (Toyo Extensa A/S II, SL).

2 tires in 185/70R14

Sort by the spec you care about.

LoadRevs/miSource
General AltiMAX RT45TouringSL · 88T24.2015.611.01,235859Spec page
Toyo Extensa A/S IIAll-seasonSL · 88T24.2518.111.01,235857Spec page

Is 185/70R14 a 24-inch tire?

≈24″

Yes. The size code works out to 24.20″, and the 2 tires here publish 24.20–24.25″, so people call it a 24.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 185/70R14Difference
195/60R1423.21-0.98″-4.1%
185/65R1423.47-0.73″-3.0%
175/70R1423.65-0.55″-2.3%
175/65R1523.96-0.24″-1.0%
215/60R1424.16-0.04″-0.2%
195/60R1524.21+0.02″+0.1%
235/50R1524.25+0.06″+0.2%
185/65R1524.47+0.27″+1.1%
225/60R1424.63+0.43″+1.8%
195/70R1424.75+0.55″+2.3%

How to read 185/70R14

How to read any tire size

185/70R14 88T as printed on the tire sidewall, with each part numbered185/70R14 88T123456
How 185/70R14 88T 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.
1185Section width

185 mm across the widest point, or 7.28 inches. Every 185 size

270Aspect ratio

A percentage, not a measurement: the sidewall is 70% as tall as the tire is wide, which is 129.5 mm or 5.10 inches.

3RConstruction

Radial construction.

414Wheel diameter

Mounts on a 14-inch wheel. Approved wheel widths run 4.5″ to 6.0″.

588Load index

Each tire carries up to 1,235 lb (560 kg) at its maximum pressure.

6TSpeed rating

Rated for up to 118 mph sustained.

SpecificationInchesMetric
Overall diameter24.20615 mm
Section width7.28185 mm
Sidewall height5.10129.5 mm
Circumference76.01,931 mm
Revolutions per mile (calculated, unloaded)833.5518 per km
Revolutions per mile (published by manufacturers)857–859533–534 per km
Approved wheel width4.5–6.0114–152 mm

Speedometer error after switching to 185/70R14

Your actual speed– mph

Questions about 185/70R14

What is 185/70R14 in inches?

24.20 inches tall, 7.28 inches wide, on a 14-inch wheel. Written in inches, that is roughly 24.2×7.3R14.

How much does a 185/70R14 tire weigh?

Between 15.6 lb and 18.1 lb for the 2 tires listed here. The lightest is the General AltiMAX RT45 (SL); the heaviest is the Toyo Extensa A/S II (SL).

What wheel width do I need for 185/70R14?

Manufacturers approve 4.5–6.0″ wide wheels for this size.

How many revolutions per mile does a 185/70R14 make?

Published figures run 857–859 revolutions per mile. The calculated figure is 833.5, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 185/70R14 than 215/60R14?

0.04 inches taller on paper (24.20″ vs 24.16″), which raises the axle about 0.02″. Your speedometer will read about 0.2% slow.