265/45R20 tire size
A 265/45R20 tire is 29.39 inches (746.5 mm) tall, 10.43 in (265 mm) wide and fits a 20-inch wheel. In inch notation it is roughly a 29.4x10.4R20 — a "29-inch" tire.
| Overall diameter | 29.39 in | 746.5 mm |
|---|---|---|
| Section width | 10.43 in | 265 mm |
| Sidewall height | 4.69 in | 119.3 mm |
| Circumference | 92.33 in | 2,345 mm |
| Revolutions | 686.2 per mile | 426.4 per km |
| Rim diameter | 20 in | 508.0 mm |
Compare 265/45R20 with another size
Alternative sizes on the same 20-inch wheel
Sizes in use within ±3 % of the overall diameter of 265/45R20:
Plus and minus sizes for 265/45R20
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 285/50R18 | Minus 2 (18 in) | 29.22 in | −0.58% |
| 245/60R18 | Minus 2 (18 in) | 29.57 in | +0.63% |
| 235/60R18 | Minus 2 (18 in) | 29.10 in | −0.98% |
| 255/55R18 | Minus 2 (18 in) | 29.04 in | −1.18% |
| 265/50R19 | Minus 1 (19 in) | 29.43 in | +0.15% |
| 295/45R19 | Minus 1 (19 in) | 29.45 in | +0.21% |
| 235/55R19 | Minus 1 (19 in) | 29.18 in | −0.72% |
| 285/45R19 | Minus 1 (19 in) | 29.10 in | −0.99% |
| 305/35R21 | Plus 1 (21 in) | 29.41 in | +0.05% |
| 265/40R21 | Plus 1 (21 in) | 29.35 in | −0.15% |
| 235/45R21 | Plus 1 (21 in) | 29.33 in | −0.21% |
| 295/35R21 | Plus 1 (21 in) | 29.13 in | −0.88% |
| 315/30R22 | Plus 2 (22 in) | 29.44 in | +0.17% |
| 265/35R22 | Plus 2 (22 in) | 29.30 in | −0.29% |
| 305/30R22 | Plus 2 (22 in) | 29.20 in | −0.63% |
| 275/35R22 | Plus 2 (22 in) | 29.58 in | +0.64% |
Vehicles approved with 265/45R20 tires
Models whose Swiss type approval lists 265/45R20 as a standard or optional size (565 approvals in total). Always check your own vehicle's placard or papers.
- Porsche Macan
- Mercedes-Benz GLE
- Maserati Levante
- Mercedes-Benz R-Class
- BMW X3
- BMW X4
- Mercedes-Benz ML
- Mercedes-Benz GLC
- Bentley Continental
- Bentley Mulsanne
- Zeekr 7X
- Bentley Conti
- Bentley Flying
- Volkswagen ID
- Genesis GV70
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
- 245/35R20 (−9.0%)
- 245/40R20 (−5.7%)
- 245/45R20 (−2.4%)
- 245/50R20 (+0.9%)
- 255/35R20 (−8.0%)
- 255/40R20 (−4.6%)
- 255/45R20 (−1.2%)
- 255/50R20 (+2.2%)
- 255/55R20 (+5.6%)
- 265/35R20 (−7.1%)
- 265/40R20 (−3.5%)
- 265/50R20 (+3.5%)
- 275/35R20 (−6.2%)
- 275/40R20 (−2.5%)
- 275/45R20 (+1.2%)
- 275/50R20 (+4.9%)
- 275/55R20 (+8.6%)
- 285/35R20 (−5.2%)
- 285/40R20 (−1.4%)
- 285/45R20 (+2.4%)
- 285/50R20 (+6.2%)
- 285/55R20 (+10.0%)
Reading the 265/45R20 size
- 265 — section width in millimetres (10.43 in).
- 45 — aspect ratio: the sidewall is 45 % of the width, 119.3 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.