335/30R23 in inches

A 335/30R23 tire is 30.9″ tall and 13.2″ wide, and fits a 23″ wheel. In inches it is written 30.9×13.2R23.

Diameter30.91″

Width13.19″

Sidewall3.96″

Drawn to scale. Nominal dimensions calculated from the size code.

Manufacturer data

How tall 335/30R23 tires really are

Heights published by Michelin for the one tire in this size. Their published revolutions per mile work out to 30.0″ under load (below).

The one tire listed, the Michelin Pilot Sport 4 SUV, measures 30.90″: 0.01″ shorter than the size code's 30.91″.

Height under load30.0″

Published revs per mile (672) mean the tire rolls like a 30.0″ tire on the vehicle. Use this for speedometer calibration.

1 tire in 335/30R23

Sort by the spec you care about.

	Load					Revs/mi	Source
Michelin Pilot Sport 4 SUVPerformance	XL · 111Y	30.90	33.6	9.5	2,403	672	Spec page

Is 335/30R23 a 31-inch tire?

≈31″

Yes. The size code works out to 30.91″, and the 1 tire here publishes 30.90″, so people call it a 31.

All 31-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

Size	Diameter ″	vs 335/30R23	Difference
315/30R23	30.44	-0.47″	-1.5%
275/40R22	30.66	-0.25″	-0.8%
315/35R22	30.68	-0.23″	-0.8%
285/35R23	30.85	-0.06″	-0.2%
325/35R22	30.96	+0.04″	+0.1%
295/30R24	30.97	+0.06″	+0.2%
285/40R22	30.98	+0.06″	+0.2%
255/45R22	31.04	+0.12″	+0.4%
295/35R23	31.13	+0.22″	+0.7%
325/35R23	31.96	+1.04″	+3.4%

How to read 335/30R23

How to read any tire size

How 335/30R23 111Y 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.

1335Section width

335 mm across the widest point, or 13.19 inches. Every 335 size

230Aspect ratio

A percentage, not a measurement: the sidewall is 30% as tall as the tire is wide, which is 100.5 mm or 3.96 inches.

3RConstruction

Radial construction.

423Wheel diameter

Mounts on a 23-inch wheel. Approved wheel widths run 11.5″ to 12.5″.

5111Load index

Each tire carries up to 2,403 lb (1,090 kg) at its maximum pressure.

6YSpeed rating

Rated for up to 186 mph sustained.

XLExtra load

Printed after the size.

Specification	Inches	Metric
Overall diameter	30.91	785 mm
Section width	13.19	335 mm
Sidewall height	3.96	100.5 mm
Circumference	97.1	2,467 mm
Revolutions per mile (calculated, unloaded)	652.4	405 per km
Revolutions per mile (published by manufacturers)	672	418 per km
Approved wheel width	11.5–12.5	292–318 mm

Speedometer error after switching to 335/30R23

Your actual speed– mph

Questions about 335/30R23

What is 335/30R23 in inches?

30.91 inches tall, 13.19 inches wide, on a 23-inch wheel. Written in inches, that is roughly 30.9×13.2R23.

What wheel width do I need for 335/30R23?

Manufacturers approve 11.5–12.5″ wide wheels for this size.

How many revolutions per mile does a 335/30R23 make?

Published figures run 672 revolutions per mile. The calculated figure is 652.4, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 335/30R23 than 285/35R23?

0.06 inches taller on paper (30.91″ vs 30.85″), which raises the axle about 0.03″. Your speedometer will read about 0.2% slow.