255/70R16 tire size
A 255/70R16 tire is 30.06 inches (763.4 mm) tall, 10.04 in (255 mm) wide and fits a 16-inch wheel. In inch notation it is roughly a 30.1x10.0R16 — a "30-inch" tire.
| Overall diameter | 30.06 in | 763.4 mm |
|---|---|---|
| Section width | 10.04 in | 255 mm |
| Sidewall height | 7.03 in | 178.5 mm |
| Circumference | 94.42 in | 2,398 mm |
| Revolutions | 671.0 per mile | 417.0 per km |
| Rim diameter | 16 in | 406.4 mm |
Compare 255/70R16 with another size
Alternative sizes on the same 16-inch wheel
Sizes in use within ±3 % of the overall diameter of 255/70R16:
Plus and minus sizes for 255/70R16
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 255/75R15 | Minus 1 (15 in) | 30.06 in | +0.01% |
| 265/70R15 | Minus 1 (15 in) | 29.61 in | −1.49% |
| 255/65R17 | Plus 1 (17 in) | 30.05 in | −0.01% |
| 235/70R17 | Plus 1 (17 in) | 29.95 in | −0.34% |
| 245/70R17 | Plus 1 (17 in) | 30.50 in | +1.49% |
| 265/65R17 | Plus 1 (17 in) | 30.56 in | +1.69% |
| 255/60R18 | Plus 2 (18 in) | 30.05 in | −0.03% |
| 235/65R18 | Plus 2 (18 in) | 30.03 in | −0.09% |
| 285/55R18 | Plus 2 (18 in) | 30.34 in | +0.96% |
| 265/60R18 | Plus 2 (18 in) | 30.52 in | +1.55% |
| 255/55R19 | Plus 3 (19 in) | 30.04 in | −0.04% |
| 235/60R19 | Plus 3 (19 in) | 30.10 in | +0.16% |
| 275/50R19 | Plus 3 (19 in) | 29.83 in | −0.76% |
| 265/55R19 | Plus 3 (19 in) | 30.48 in | +1.40% |
Vehicles approved with 255/70R16 tires
Models whose Swiss type approval lists 255/70R16 as a standard or optional size (33 approvals in total). Always check your own vehicle's placard or papers.
Source: Swiss Federal Roads Office (FEDRO/ASTRA), open government data. Original data (downloaded 2026-09-29). Data processed by us; errors in processing are ours, not the publisher's.
Nearby 16-inch sizes
Reading the 255/70R16 size
- 255 — section width in millimetres (10.04 in).
- 70 — aspect ratio: the sidewall is 70 % of the width, 178.5 mm.
- R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
- 16 — fits a 16-inch diameter wheel.
The load index and speed rating (for example 91V) follow the size on the sidewall. They must meet at least the values on your vehicle's tire placard.