235/60R20 tire size
A 235/60R20 tire is 31.10 inches (790.0 mm) tall, 9.25 in (235 mm) wide and fits a 20-inch wheel. In inch notation it is roughly a 31.1x9.3R20 — a "31-inch" tire.
| Overall diameter | 31.10 in | 790.0 mm |
|---|---|---|
| Section width | 9.25 in | 235 mm |
| Sidewall height | 5.55 in | 141.0 mm |
| Circumference | 97.71 in | 2,482 mm |
| Revolutions | 648.4 per mile | 402.9 per km |
| Rim diameter | 20 in | 508.0 mm |
Compare 235/60R20 with another size
Alternative sizes on the same 20-inch wheel
Sizes in use within ±3 % of the overall diameter of 235/60R20:
Plus and minus sizes for 235/60R20
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 255/65R18 | Minus 2 (18 in) | 31.05 in | −0.16% |
| 275/60R18 | Minus 2 (18 in) | 30.99 in | −0.35% |
| 285/60R18 | Minus 2 (18 in) | 31.46 in | +1.16% |
| 265/65R18 | Minus 2 (18 in) | 31.56 in | +1.48% |
| 255/60R19 | Minus 1 (19 in) | 31.05 in | −0.18% |
| 235/65R19 | Minus 1 (19 in) | 31.03 in | −0.24% |
| 275/55R19 | Minus 1 (19 in) | 30.91 in | −0.62% |
| 265/55R19 | Minus 1 (19 in) | 30.48 in | −2.01% |
| 285/45R21 | Plus 1 (21 in) | 31.10 in | −0.01% |
| 255/50R21 | Plus 1 (21 in) | 31.04 in | −0.20% |
| 275/45R21 | Plus 1 (21 in) | 30.74 in | −1.15% |
| 245/55R21 | Plus 1 (21 in) | 31.61 in | +1.63% |
| 255/45R22 | Plus 2 (22 in) | 31.04 in | −0.22% |
| 285/40R22 | Plus 2 (22 in) | 30.98 in | −0.41% |
| 275/40R22 | Plus 2 (22 in) | 30.66 in | −1.42% |
| 275/45R22 | Plus 2 (22 in) | 31.74 in | +2.06% |
| 255/40R23 | Plus 3 (23 in) | 31.03 in | −0.23% |
| 285/35R23 | Plus 3 (23 in) | 30.85 in | −0.80% |
| 275/35R23 | Plus 3 (23 in) | 30.58 in | −1.68% |
| 275/40R23 | Plus 3 (23 in) | 31.66 in | +1.80% |
Vehicles approved with 235/60R20 tires
Models whose Swiss type approval lists 235/60R20 as a standard or optional size (43 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 20-inch sizes
Reading the 235/60R20 size
- 235 — section width in millimetres (9.25 in).
- 60 — aspect ratio: the sidewall is 60 % of the width, 141.0 mm.
- R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
- 20 — fits a 20-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.