tireheight.com

235/50R15 in inches

A 235/50R15 tire is 24.3″ tall and 9.3″ wide, and fits a 15″ wheel. In inches it is written 24.3×9.3R15.

Diameter24.25″
Width9.25″
Sidewall4.63″
235/50R15 drawn to scale: 24.25 inch diameter, 4.63 inch sidewall, 15 inch wheel, 9.25 inch tread width15″ wheel4.63″24.25″ overall9.25″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 235/50R15 tires really are

Heights published by Toyo for the one tire in this size. Their published revolutions per mile work out to 23.6″ under load (below).

The one tire listed, the Toyo Proxes R888R, measures 24.29″: 0.04″ taller than the size code's 24.25″.

Height under load23.6″

Published revs per mile (855) mean the tire rolls like a 23.6″ tire on the vehicle. Use this for speedometer calibration.

1 tire in 235/50R15

Sort by the spec you care about.

LoadRevs/miSource
Toyo Proxes R888RPerformanceSL · 94W24.2923.46.31,477855Spec page

Is 235/50R15 a 24-inch tire?

≈24″

Yes. The size code works out to 24.25″, and the 1 tire here publishes 24.29″, so people call it a 24.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 235/50R15Difference
195/55R1523.44-0.81″-3.3%
185/60R1523.74-0.51″-2.1%
225/50R1523.86-0.39″-1.6%
175/65R1523.96-0.30″-1.2%
215/60R1424.16-0.09″-0.4%
185/70R1424.20-0.06″-0.2%
195/60R1524.21-0.04″-0.2%
185/65R1524.47+0.22″+0.9%
205/60R1524.69+0.43″+1.8%
195/65R1524.98+0.73″+3.0%

How to read 235/50R15

How to read any tire size

235/50R15 94W as printed on the tire sidewall, with each part numbered235/50R15 94W123456
How 235/50R15 94W is printed on the sidewall. It's the most common code among the 1 tire here; tires in this size come in other load and speed ratings too.
1235Section width

235 mm across the widest point, or 9.25 inches. Every 235 size

250Aspect ratio

A percentage, not a measurement: the sidewall is 50% as tall as the tire is wide, which is 117.5 mm or 4.63 inches.

3RConstruction

Radial construction.

415Wheel diameter

Mounts on a 15-inch wheel. Approved wheel widths run 6.5″ to 8.5″.

594Load index

Each tire carries up to 1,477 lb (670 kg) at its maximum pressure.

6WSpeed rating

Rated for up to 168 mph sustained.

SpecificationInchesMetric
Overall diameter24.25616 mm
Section width9.25235 mm
Sidewall height4.63117.5 mm
Circumference76.21,935 mm
Revolutions per mile (calculated, unloaded)831.6517 per km
Revolutions per mile (published by manufacturers)855531 per km
Approved wheel width6.5–8.5165–216 mm

Speedometer error after switching to 235/50R15

Your actual speed– mph

Questions about 235/50R15

What is 235/50R15 in inches?

24.25 inches tall, 9.25 inches wide, on a 15-inch wheel. Written in inches, that is roughly 24.3×9.3R15.

What wheel width do I need for 235/50R15?

Manufacturers approve 6.5–8.5″ wide wheels for this size.

How many revolutions per mile does a 235/50R15 make?

Published figures run 855 revolutions per mile. The calculated figure is 831.6, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 235/50R15 than 195/60R15?

0.04 inches taller on paper (24.25″ vs 24.21″), which raises the axle about 0.02″. Your speedometer will read about 0.2% slow.