tireheight.com

235/75R16 in inches

A 235/75R16 tire is 29.9″ tall and 9.3″ wide, and fits a 16″ wheel. In inches it is written 29.9×9.3R16.

Diameter29.88″
Width9.25″
Sidewall6.94″
235/75R16 drawn to scale: 29.88 inch diameter, 6.94 inch sidewall, 16 inch wheel, 9.25 inch tread width16″ wheel6.94″29.88″ overall9.25″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 235/75R16 tires really are

Heights published by General and Toyo for all 2 tires in this size. Their published revolutions per mile work out to 29.0″ under load (below).

Real 235/75R16 tires measure 29.84–29.90″, against 29.88″ from the size code. They run both taller and shorter than the size code.

Height under load29.0″

Published revs per mile (695–696) mean the tire rolls like a 29.0″ tire on the vehicle. Use this for speedometer calibration.

Weight spread31.5–34.4 lb

The lightest (General Grabber HTS60, SL) is 2.9 lb lighter per corner than the heaviest (Toyo Observe G3-Ice, SL).

2 tires in 235/75R16

Sort by the spec you care about.

LoadRevs/miSource
General Grabber HTS60TouringSL · 108S29.9031.512.02,205695Spec page
Toyo Observe G3-IceWinterSL · 108T29.8434.413.12,205696Spec page

Is 235/75R16 a 30-inch tire?

≈30″

Yes. The size code works out to 29.88″, and the 2 tires here publish 29.84–29.90″, so people call it a 30.

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

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 235/75R16Difference
255/65R1629.05-0.83″-2.8%
225/75R1629.29-0.59″-2.0%
245/70R1629.50-0.37″-1.3%
235/70R1729.95+0.07″+0.3%
275/60R1729.99+0.11″+0.4%
30×10.00R1530.00+0.12″+0.4%
255/70R1630.06+0.18″+0.6%
215/85R1630.39+0.51″+1.7%
245/75R1630.47+0.59″+2.0%
265/70R1630.61+0.73″+2.4%

How to read 235/75R16

How to read any tire size

235/75R16 108S as printed on the tire sidewall, with each part numbered235/75R16 108S123456
How 235/75R16 108S 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.
1235Section width

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

275Aspect ratio

A percentage, not a measurement: the sidewall is 75% as tall as the tire is wide, which is 176.3 mm or 6.94 inches.

3RConstruction

Radial construction.

416Wheel diameter

Mounts on a 16-inch wheel. Approved wheel widths run 6.0″ to 8.0″.

5108Load index

Each tire carries up to 2,205 lb (1,000 kg) at its maximum pressure.

6SSpeed rating

Rated for up to 112 mph sustained.

SpecificationInchesMetric
Overall diameter29.88759 mm
Section width9.25235 mm
Sidewall height6.94176.3 mm
Circumference93.92,384 mm
Revolutions per mile (calculated, unloaded)675.0419 per km
Revolutions per mile (published by manufacturers)695–696432 per km
Approved wheel width6.0–8.0152–203 mm

Speedometer error after switching to 235/75R16

Your actual speed– mph

Questions about 235/75R16

What is 235/75R16 in inches?

29.88 inches tall, 9.25 inches wide, on a 16-inch wheel. Written in inches, that is roughly 29.9×9.3R16.

How much does a 235/75R16 tire weigh?

Between 31.5 lb and 34.4 lb for the 2 tires listed here. The lightest is the General Grabber HTS60 (SL); the heaviest is the Toyo Observe G3-Ice (SL).

What wheel width do I need for 235/75R16?

Manufacturers approve 6.0–8.0″ wide wheels for this size.

How many revolutions per mile does a 235/75R16 make?

Published figures run 695–696 revolutions per mile. The calculated figure is 675.0, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 235/75R16 than 245/70R16?

0.37 inches taller on paper (29.88″ vs 29.50″), which raises the axle about 0.19″. Your speedometer will read about 1.3% slow.