235/80R16 tire size
A 235/80R16 tire is 30.80 inches (782.4 mm) tall, 9.25 in (235 mm) wide and fits a 16-inch wheel. In inch notation it is roughly a 30.8x9.3R16 — a "31-inch" tire.
| Overall diameter | 30.80 in | 782.4 mm |
|---|---|---|
| Section width | 9.25 in | 235 mm |
| Sidewall height | 7.40 in | 188.0 mm |
| Circumference | 96.77 in | 2,458 mm |
| Revolutions | 654.7 per mile | 406.8 per km |
| Rim diameter | 16 in | 406.4 mm |
Compare 235/80R16 with another size
Alternative sizes on the same 16-inch wheel
Sizes in use within ±3 % of the overall diameter of 235/80R16:
Plus and minus sizes for 235/80R16
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 255/75R15 | Minus 1 (15 in) | 30.06 in | −2.42% |
| 265/65R17 | Plus 1 (17 in) | 30.56 in | −0.78% |
| 255/70R17 | Plus 1 (17 in) | 31.06 in | +0.82% |
| 275/65R17 | Plus 1 (17 in) | 31.07 in | +0.88% |
| 245/70R17 | Plus 1 (17 in) | 30.50 in | −0.97% |
| 275/60R18 | Plus 2 (18 in) | 30.99 in | +0.61% |
| 255/65R18 | Plus 2 (18 in) | 31.05 in | +0.81% |
| 245/65R18 | Plus 2 (18 in) | 30.54 in | −0.86% |
| 265/60R18 | Plus 2 (18 in) | 30.52 in | −0.92% |
| 275/55R19 | Plus 3 (19 in) | 30.91 in | +0.35% |
| 235/65R19 | Plus 3 (19 in) | 31.03 in | +0.73% |
| 255/60R19 | Plus 3 (19 in) | 31.05 in | +0.79% |
| 265/55R19 | Plus 3 (19 in) | 30.48 in | −1.06% |
Vehicles approved with 235/80R16 tires
Models whose Swiss type approval lists 235/80R16 as a standard or optional size (19 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 235/80R16 size
- 235 — section width in millimetres (9.25 in).
- 80 — aspect ratio: the sidewall is 80 % of the width, 188.0 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.