265/65R18 tire size
A 265/65R18 tire is 31.56 inches (801.7 mm) tall, 10.43 in (265 mm) wide and fits a 18-inch wheel. In inch notation it is roughly a 31.6x10.4R18 — a "32-inch" tire.
| Overall diameter | 31.56 in | 801.7 mm |
|---|---|---|
| Section width | 10.43 in | 265 mm |
| Sidewall height | 6.78 in | 172.3 mm |
| Circumference | 99.16 in | 2,519 mm |
| Revolutions | 639.0 per mile | 397.0 per km |
| Rim diameter | 18 in | 457.2 mm |
Compare 265/65R18 with another size
Alternative sizes on the same 18-inch wheel
Sizes in use within ±3 % of the overall diameter of 265/65R18:
Plus and minus sizes for 265/65R18
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 265/75R16 | Minus 2 (16 in) | 31.65 in | +0.27% |
| 235/85R16 | Minus 2 (16 in) | 31.73 in | +0.52% |
| 275/70R16 | Minus 2 (16 in) | 31.16 in | −1.28% |
| 235/80R16 | Minus 2 (16 in) | 30.80 in | −2.41% |
| 285/65R17 | Minus 1 (17 in) | 31.59 in | +0.07% |
| 265/70R17 | Minus 1 (17 in) | 31.61 in | +0.14% |
| 245/75R17 | Minus 1 (17 in) | 31.47 in | −0.30% |
| 235/80R17 | Minus 1 (17 in) | 31.80 in | +0.76% |
| 255/65R19 | Plus 1 (19 in) | 32.05 in | +1.55% |
| 255/60R19 | Plus 1 (19 in) | 31.05 in | −1.63% |
| 235/65R19 | Plus 1 (19 in) | 31.03 in | −1.70% |
| 275/55R19 | Plus 1 (19 in) | 30.91 in | −2.07% |
| 285/50R20 | Plus 2 (20 in) | 31.22 in | −1.09% |
| 275/55R20 | Plus 2 (20 in) | 31.91 in | +1.10% |
| 235/60R20 | Plus 2 (20 in) | 31.10 in | −1.46% |
| 255/60R20 | Plus 2 (20 in) | 32.05 in | +1.53% |
| 245/55R21 | Plus 3 (21 in) | 31.61 in | +0.15% |
| 275/50R21 | Plus 3 (21 in) | 31.83 in | +0.84% |
| 285/45R21 | Plus 3 (21 in) | 31.10 in | −1.47% |
| 255/50R21 | Plus 3 (21 in) | 31.04 in | −1.66% |
Vehicles approved with 265/65R18 tires
Models whose Swiss type approval lists 265/65R18 as a standard or optional size (15 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 18-inch sizes
Reading the 265/65R18 size
- 265 — section width in millimetres (10.43 in).
- 65 — aspect ratio: the sidewall is 65 % of the width, 172.3 mm.
- R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
- 18 — fits a 18-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.