255/35R20 tire size
A 255/35R20 tire is 27.03 inches (686.5 mm) tall, 10.04 in (255 mm) wide and fits a 20-inch wheel. In inch notation it is roughly a 27.0x10.0R20.
| Overall diameter | 27.03 in | 686.5 mm |
|---|---|---|
| Section width | 10.04 in | 255 mm |
| Sidewall height | 3.51 in | 89.3 mm |
| Circumference | 84.91 in | 2,157 mm |
| Revolutions | 746.2 per mile | 463.7 per km |
| Rim diameter | 20 in | 508.0 mm |
Compare 255/35R20 with another size
Alternative sizes on the same 20-inch wheel
Sizes in use within ±3 % of the overall diameter of 255/35R20:
Plus and minus sizes for 255/35R20
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 255/45R18 | Minus 2 (18 in) | 27.04 in | +0.03% |
| 285/40R18 | Minus 2 (18 in) | 26.98 in | −0.19% |
| 225/50R18 | Minus 2 (18 in) | 26.86 in | −0.63% |
| 235/50R18 | Minus 2 (18 in) | 27.25 in | +0.83% |
| 255/40R19 | Minus 1 (19 in) | 27.03 in | +0.01% |
| 225/45R19 | Minus 1 (19 in) | 26.97 in | −0.20% |
| 295/35R19 | Minus 1 (19 in) | 27.13 in | +0.38% |
| 285/35R19 | Minus 1 (19 in) | 26.85 in | −0.64% |
| 295/25R21 | Plus 1 (21 in) | 26.81 in | −0.82% |
| 265/30R21 | Plus 1 (21 in) | 27.26 in | +0.86% |
| 275/30R21 | Plus 1 (21 in) | 27.50 in | +1.73% |
| 285/30R21 | Plus 1 (21 in) | 27.73 in | +2.61% |
Vehicles approved with 255/35R20 tires
Models whose Swiss type approval lists 255/35R20 as a standard or optional size (1,288 approvals in total). Always check your own vehicle's placard or papers.
- Audi A6
- BMW 4 Series
- Jaguar XF
- Jaguar F-Type
- Volvo V90
- Mercedes-Benz S-Class
- Volvo S90
- Alpina B5
- Audi Q3
- Porsche 911
- BMW i4
- Ferrari SF
- Mercedes-Benz CL
- Ferrari 812
- Alpina B6
- Opel Insignia
- Alpina D5
- BMW M6
- Lotus Evora
- Audi S6
- Audi RS
- Jaguar XKR
- Ferrari F12
- Jaguar XJ8
- Aston Martin Vanquish
- Jaguar XK
- Cupra Formentor
- Infiniti Q60
- Jaguar XJ
- Maserati GT
- Ferrari 849
- Saab 9-5
- Ferrari 599
- Jaguar XK8
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
- 235/35R20 (−2.0%)
- 235/40R20 (+1.4%)
- 235/45R20 (+4.8%)
- 245/30R20 (−4.6%)
- 245/35R20 (−1.0%)
- 245/40R20 (+2.5%)
- 245/45R20 (+6.1%)
- 255/30R20 (−3.7%)
- 255/40R20 (+3.7%)
- 255/45R20 (+7.4%)
- 265/30R20 (−2.8%)
- 265/35R20 (+1.0%)
- 265/40R20 (+4.9%)
- 265/45R20 (+8.7%)
- 275/30R20 (−2.0%)
- 275/35R20 (+2.0%)
- 275/40R20 (+6.0%)
- 275/45R20 (+10.1%)
Reading the 255/35R20 size
- 255 — section width in millimetres (10.04 in).
- 35 — aspect ratio: the sidewall is 35 % of the width, 89.3 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.