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385/70R16 in inches

A 385/70R16 tire is 37.2″ tall and 15.2″ wide, and fits a 16″ wheel. In inches it is written 37.2×15.2R16.

Diameter37.22″
Width15.16″
Sidewall10.61″
385/70R16 drawn to scale: 37.22 inch diameter, 10.61 inch sidewall, 16 inch wheel, 15.16 inch tread width16″ wheel10.61″37.22″ overall15.16″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 385/70R16 tires really are

Heights published by Toyo for the one tire in this size. Their published revolutions per mile work out to 36.7″ under load (below).

The one tire listed, the Toyo Open Country M/T, measures 37.72″: 0.50″ taller than the size code's 37.22″.

Height under load36.7″

Published revs per mile (550) mean the tire rolls like a 36.7″ tire on the vehicle. Use this for speedometer calibration.

1 tire in 385/70R16

Sort by the spec you care about.

LoadRevs/miSource
Toyo Open Country M/TMud-terrainLT D · 130Q37.72101.521.04,190550Spec page

Is 385/70R16 a 38-inch tire?

≈38″

Yes. The size code works out to 37.22″, and the 1 tire here publishes 37.72″, so people call it a 38.

All 38-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 385/70R16Difference
35×11.00R1535.00-2.22″-6.0%
35×12.50R1535.00-2.22″-6.0%
35×13.50R1535.00-2.22″-6.0%
35×9.50R1535.00-2.22″-6.0%
37×14.50R1537.00-0.22″-0.6%
37×12.50R1737.00-0.22″-0.6%
37×13.50R1737.00-0.22″-0.6%
38×11.50R1738.00+0.78″+2.1%
38×12.50R1738.00+0.78″+2.1%
39×13.50R1739.00+1.78″+4.8%

How to read 385/70R16

How to read any tire size

LT385/70R16 130Q as printed on the tire sidewall, with each part numberedLT385/70R16 130Q1234567
How LT385/70R16 130Q 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.
1LTLight truck

Marks a light truck (LT) tire.

2385Section width

385 mm across the widest point, or 15.16 inches.

370Aspect ratio

A percentage, not a measurement: the sidewall is 70% as tall as the tire is wide, which is 269.5 mm or 10.61 inches.

4RConstruction

Radial construction.

516Wheel diameter

Mounts on a 16-inch wheel. Approved wheel widths run 10.0″ to 12.0″.

6130Load index

Each tire carries up to 4,190 lb (1,900 kg) at its maximum pressure.

7QSpeed rating

Rated for up to 99 mph sustained.

DLoad range

Printed separately as "LOAD RANGE D": a 8-ply rating, inflated up to 65 psi (standard load-range table). The load range D tires here carry up to 4,190 lb each, as published.

SpecificationInchesMetric
Overall diameter37.22945 mm
Section width15.16385 mm
Sidewall height10.61269.5 mm
Circumference116.92,970 mm
Revolutions per mile (calculated, unloaded)541.9337 per km
Revolutions per mile (published by manufacturers)550342 per km
Approved wheel width10.0–12.0254–305 mm

Questions about 385/70R16

What is 385/70R16 in inches?

37.22 inches tall, 15.16 inches wide, on a 16-inch wheel. Written in inches, that is roughly 37.2×15.2R16.

What wheel width do I need for 385/70R16?

Manufacturers approve 10.0–12.0″ wide wheels for this size.

How many revolutions per mile does a 385/70R16 make?

Published figures run 550 revolutions per mile. The calculated figure is 541.9, but manufacturers measure the tire under load, where it rolls on a smaller radius.