255/60R20 tire size
A 255/60R20 tire is 32.05 inches (814.0 mm) tall, 10.04 in (255 mm) wide and fits a 20-inch wheel. In inch notation it is roughly a 32.0x10.0R20 — a "32-inch" tire.
| Overall diameter | 32.05 in | 814.0 mm |
|---|---|---|
| Section width | 10.04 in | 255 mm |
| Sidewall height | 6.02 in | 153.0 mm |
| Circumference | 100.68 in | 2,557 mm |
| Revolutions | 629.3 per mile | 391.0 per km |
| Rim diameter | 20 in | 508.0 mm |
Compare 255/60R20 with another size
Alternative sizes on the same 20-inch wheel
Sizes in use within ±3 % of the overall diameter of 255/60R20:
Plus and minus sizes for 255/60R20
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 255/70R18 | Minus 2 (18 in) | 32.06 in | +0.02% |
| 275/65R18 | Minus 2 (18 in) | 32.07 in | +0.09% |
| 265/65R18 | Minus 2 (18 in) | 31.56 in | −1.51% |
| 285/65R18 | Minus 2 (18 in) | 32.59 in | +1.68% |
| 255/65R19 | Minus 1 (19 in) | 32.05 in | +0.01% |
| 275/50R21 | Plus 1 (21 in) | 31.83 in | −0.69% |
| 245/55R21 | Plus 1 (21 in) | 31.61 in | −1.36% |
| 285/45R21 | Plus 1 (21 in) | 31.10 in | −2.96% |
| 285/45R22 | Plus 2 (22 in) | 32.10 in | +0.16% |
| 275/45R22 | Plus 2 (22 in) | 31.74 in | −0.95% |
| 305/40R22 | Plus 2 (22 in) | 31.61 in | −1.38% |
| 295/40R22 | Plus 2 (22 in) | 31.29 in | −2.36% |
| 285/40R23 | Plus 3 (23 in) | 31.98 in | −0.22% |
| 275/40R23 | Plus 3 (23 in) | 31.66 in | −1.20% |
| 305/35R23 | Plus 3 (23 in) | 31.41 in | −2.00% |
| 295/35R23 | Plus 3 (23 in) | 31.13 in | −2.86% |
Vehicles approved with 255/60R20 tires
Models whose Swiss type approval lists 255/60R20 as a standard or optional size (336 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 255/60R20 size
- 255 — section width in millimetres (10.04 in).
- 60 — aspect ratio: the sidewall is 60 % of the width, 153.0 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.