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.
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″.
Published revs per mile (550) mean the tire rolls like a 36.7″ tire on the vehicle. Use this for speedometer calibration.
Sort by the spec you care about.
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.
Differences in overall diameter, calculated from each size code.
| Size | Diameter ″ | vs 385/70R16 | Difference |
|---|---|---|---|
| 35×11.00R15 | 35.00 | -2.22″ | -6.0% |
| 35×12.50R15 | 35.00 | -2.22″ | -6.0% |
| 35×13.50R15 | 35.00 | -2.22″ | -6.0% |
| 35×9.50R15 | 35.00 | -2.22″ | -6.0% |
| 37×14.50R15 | 37.00 | -0.22″ | -0.6% |
| 37×12.50R17 | 37.00 | -0.22″ | -0.6% |
| 37×13.50R17 | 37.00 | -0.22″ | -0.6% |
| 38×11.50R17 | 38.00 | +0.78″ | +2.1% |
| 38×12.50R17 | 38.00 | +0.78″ | +2.1% |
| 39×13.50R17 | 39.00 | +1.78″ | +4.8% |
Marks a light truck (LT) tire.
385 mm across the widest point, or 15.16 inches.
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.
Radial construction.
Mounts on a 16-inch wheel. Approved wheel widths run 10.0″ to 12.0″.
Each tire carries up to 4,190 lb (1,900 kg) at its maximum pressure.
Rated for up to 99 mph sustained.
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.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 37.22 | 945 mm |
| Section width | 15.16 | 385 mm |
| Sidewall height | 10.61 | 269.5 mm |
| Circumference | 116.9 | 2,970 mm |
| Revolutions per mile (calculated, unloaded) | 541.9 | 337 per km |
| Revolutions per mile (published by manufacturers) | 550 | 342 per km |
| Approved wheel width | 10.0–12.0 | 254–305 mm |
37.22 inches tall, 15.16 inches wide, on a 16-inch wheel. Written in inches, that is roughly 37.2×15.2R16.
Manufacturers approve 10.0–12.0″ wide wheels for this size.
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.